Pyrimidine Derivatives And Their Use As CB2 Modulators

ABSTRACT

This relates to novel pyrimidine derivatives, pharmaceutical compositions containing these compounds and their use in the treatment of diseases, particularly pain, which diseases are caused directly or indirectly by an increase or decrease in activity of the cannabinoid receptor.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is filed as a continuation application of U.S. Ser. No. 10/524,470, filed Feb. 28, 2006, which is a National Phase Application of International Application No. PCT/EP2003/009217 filed Aug. 19, 2003, which claims priority from GB 0219501.4 filed Aug. 21, 2002 and GB 0309326.7 filed Apr. 24, 2003.

FIELD OF THE INVENTION

The present invention relates to novel pyrimidine derivatives, pharmaceutical compositions containing these compounds and their use in the treatment of diseases, particularly pain, which diseases are caused directly or indirectly by an increase or decrease in activity of the cannabinoid receptor.

BACKGROUND OF THE INVENTION

Cannabinoids are a specific class of psychoactive compounds present in Indian cannabis (Cannabis sativa), including about sixty different molecules, the most representative being cannabinol, cannabidiol and several isomers of tetrahydrocannabinol. Knowledge of the therapeutic activity of cannabis dates back to the ancient dynasties of China, where, 5,000 years ago, cannabis was used for the treatment of asthma, migraine and some gynaecological disorders. These uses later became so established that, around 1850, cannabis extracts were included in the US Pharmacopaeia and remained there until 1947.

Cannabinoids are known to cause different effects on various systems and/or organs, the most important being on the central nervous system and on the cardiovascular system. These effects include alterations in memory and cognition, euphoria, and sedation. Cannabinoids also increase heart rate and vary systemic arterial pressure. Peripheral effects related to bronchial constriction, immunomodulation, and inflammation have also been observed. The capability of cannabinoids to reduce intraocular pressure and to affect respiratory and endocrine systems is also well documented. See e.g. L. E. Hollister, Health Aspects of Cannabis, Pharmacological Reviews, Vol. 38, pp. 1-20, (1986). More recently, it was found that cannabinoids suppress the cellular and humoral immune responses and exhibit anti-inflammatory properties. Wirth et al., Anti-inflammatory Properties of Cannabichrome, Life Science, Vol. 26, pp. 1991-1995, (1980).

In spite of the foregoing benefits, the therapeutic use of cannabis is controversial, both due to its relevant psychoactive effects (causing dependence and addiction), and due to manifold side effects that have not yet been completely clarified. Although work in this field has been ongoing since the 1940's, evidence indicating that the peripheral effects of cannabinoids are directly mediated, and not secondary to a CNS effect, has been limited by the lack of receptor characterisation, the lack of information concerning an endogenous cannabinoid ligand and, until recently, the lack of receptor subtype selective compounds.

The first cannabinoid receptor was found to be mainly located in the brain, in neural cell lines, and, only to a lesser extent, at the peripheral level. In view of its location, it was called the central receptor (“CB1”). See Matsuda et al., “Structure of a Cannabinoid Receptor and Functional Expression of the Cloned cDNA,” Nature, Vol. 346, pp. 561-564 (1990. The second cannabinoid receptor (“CB2”) was identified in the spleen, and was assumed to modulate the non psychoactive effects of the cannabinoids. See Munro et el., “Molecular Characterization of a Peripheral Receptor for Cannabinoids,” Nature, Vol. 365, pp. 61-65 (1993).

Recently, some compounds have been prepared which are capable of acting as agonists on both the cannabinoid receptors. For example, use of derivatives of dihydroxypyrrole-(1,2,3-d,e)-1,4-benzoxazine in the treatment of glaucoma and the use of derivatives of 1,5-diphenyl-pyrazole as immunomodulators or psychotropic agents in the treatment of various neuropathologies, migraine, epilepsy, glaucoma, etc are known. See U.S. Pat. No. 5,112,820 and EP 576357, respectively. However, because these compounds are active on both the CB1 and CB2 receptor, they can lead to serious psychoactive effects.

The foregoing indications and the preferential localisation of the CB2 receptor in the immune system confirms a specific role of CB2 in modulating the immune and anti-inflammatory response to stimuli of different sources.

The total size of the patient population suffering from pain is vast (almost 300 million), dominated by those suffering from back pain, osteo-arthritic pain and post-operative pain. Neuropathic pain (associated with neuronal lesions such as those induced by diabetes, HIV, herpes infection, or stroke) occurs with lower, but still substantial prevalence, as does cancer pain.

The pathogenic mechanisms that give rise to pain symptoms can be grouped into two main categories:

-   -   those that are components of inflammatory tissue responses         (Inflammatory Pain);     -   those that result from a neuronal lesion of some form         (Neuropathic Pain).

Chronic inflammatory pain consists predominantly of osteo-arthritis, chronic low back pain and rheumatoid arthritis. The pain results from acute and on-going injury and/or inflammation. There may be both spontaneous and provoked pain.

There is an underlying pathological hypersensitivity as a result of physiological hyperexcitability and the release of inflammatory mediators which further potentiate this hyperexcitability. CB2 receptors are expressed on inflammatory cells (T cells, B cells, macrophages, mast cells) and mediate immune suppression through inhibition of cellular interaction/inflammatory mediator release. CB2 receptors may also be expressed on sensory nerve terminals and therefore directly inhibit hyperalgesia.

The role of CB2 in immunomodulation, inflammation, osteoporosis, cardiovascular, renal and other disease conditions is now being examined. In light of the fact that cannabinoids act on receptors capable of modulating different functional effects, and in view of the low homology between CB2 and CB1, the importance of developing a class of drugs selective for the specific receptor sub-type is evident. The natural or synthetic cannabinoids currently available do not fulfil this function because they are active on both receptors.

Based on the foregoing, there is a need for compounds which are capable of selectively modulating the receptor for cannabinoids and, therefore, the pathologies associated with such receptors. Thus, CB2 modulators offer a unique approach toward the pharmacotherapy of immune disorders, inflammation, osteoporosis, renal ischemia and other pathophysiological conditions.

DESCRIPTION OF THE INVENTION

The present invention provides novel pyrimidine derivatives of formula (I) and pharmaceutically acceptable derivatives thereof, pharmaceutical compositions containing these compounds or derivatives, and their use as CB2 receptor modulators, which are useful in the treatment of a variety of disorders.

The present invention further comprises a method for treating disease mediated by CB2 receptors in an animal, including humans, which comprises administering to an animal in need thereof an effective amount of a compound of formula (I) or a pharmaceutically acceptable derivative thereof.

The invention provides compounds of formula (I):

wherein:

Y is phenyl, optionally substituted with one, two or three substituents;

R¹ is selected from hydrogen, C₁₋₆ alkyl C₃₋₆ cycloalkyl and halosubstitutedC₁₋₆ alkyl;

R² is (CH₂)_(m)R³ where m is 0 or 1;

or R¹ and R² together with N to which they are attached form an optionally substituted 4- to 8-membered non-aromatic heterocyclyl ring;

R³ is an optionally substituted 4- to 8-membered non-aromatic heterocyclyl group, an optionally substituted C₃₋₈ cycloalkyl group, an optionally substituted straight or branched C₁₋₁₀ alkyl a C₅₋₇ cycloalkenyl or R⁵;

R⁴ is selected from hydrogen, C₁₋₆ alkyl C₃₋₆ cycloalkyl, or halosubstitutedC₁₋₆ alkyl COCH₃, and SO₂Me;

R⁵ is

wherein p is 0, 1 or 2 and X is CH₂ or O;

R⁶ is methyl, chloro or CHxFn wherein n is 1, 2, or 3, x is 0, 1 or 2 and n and x add up to 3;

R⁷ is OH, C₁₋₆alkoxy, NR^(8a)R^(8b), NHCOR⁹, NHSO₂R⁹, SOqR⁹;

R^(8a) is H or C₁₋₆alkyl;

R^(8b) is H or C₁₋₆alkyl;

R⁹ is C₁₋₆alkyl;

q is 0, 1 or 2;

and pharmaceutically acceptable derivatives thereof.

In one particular embodiment Y is a substituted phenyl.

In one particular embodiment Y is substituted by 1 or 2 substituents. If mono-substituted, in one particular embodiment the substituent is in the 3 position. If di-substituted, in one particular embodiment the substituents are in the 2- and 4-positions.

When Y is substituted, the substituent or substituents are preferably selected from C₁₋₆ alkyl, halosubstitutedC₁₋₆ alkyl, C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo, a C₁₋₆alkylsulfonyl group, —CONH₂, —NHCOCH₃ and —COOH. Furthermore the substituent or substituents can be selected from halosubstitutedC₁₋₆ alkoxy, and SO₂NR^(8a)R^(8b) wherein R^(8a) and R^(8b) are as defined above. Additionally the substituent or substituents can be SC₁₋₆alkyl.

In one particular embodiment Y is substituted by chloro, fluoro, bromo, cyano, CF₃, methyl, CF₃O— or SCH₃ and methoxy; more particularly halo, cyano or methoxy.

In one particular embodiment the compound of formula (I) is a compound of formula (Ia)

wherein;

R¹ is selected from hydrogen, C₁₋₆ alkyl, C₃₋₆ cycloalkyl and halosubstitutedC₁₋₆ alkyl;

R² is (CH₂)_(m)R³ where m is 0 or 1;

or R¹ and R² together with N to which they are attached form a 4- to 8-membered non-aromatic ring selected from azetidinyl, pyrrolidinyl, morpholinyl, piperizinyl, piperidinyl, tetrahydropyridinyl, azapine, oxapine, azacyclooctanyl, azaoxacyclooctanyl and azathiacyclooctanyl any of which can be unsubstituted or substituted by one, two or three substituents selected from C₁₋₆ alkyl, C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo, sulfonyl group, methylsulfonyl, NR^(8a)R^(8b), NHCOCH₃, (═O), and —CONHCH₃.

R³ is 2- or 3-azetidinyl, oxetanyl, thioxetanyl, thioxetanyl-s-oxide, thioxetanyl-s,s-dioxide, dioxalanyl, pyrrolidinyl, tetrahydrofuranyl, tetrahydrothiophenyl, morpholinyl, piperidinyl, piperazinyl, tetrahydropyranyl, tetrahydrothiopyranyl, thiomorpholinyl, thiomorpholinyl-s,s-dioxide, tetrahydropyridinyl, azapine, oxapine, azacyclooctanyl, azaoxacyclooctanyl, azathiacyclooctanyl, oxacylcooctanyl, thiacyclooctanyl, a C₃₋₈ cycloalkyl group, a straight or branched C₁₋₁₀ alkyl a C₅₋₇ cycloalkenyl or R⁵, any of which can be unsubstituted or substituted by one, two or three substituents selected from C₁₋₆ alkyl C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo, sulfonyl group, methylsulfonyl, NR^(8a)R^(8b), NHCOCH₃, (═O), and —CONHCH₃;

R¹⁰ is selected from C₁₋₆ alkyl halosubstitutedC₁₋₆ alkyl C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo, a C₁₋₆alkyl sulfonyl group, —CONH₂, —NHCOCH₃, —COOH, halosubstitutedC₁₋₆ alkoxy, SC₁₋₆alkyl and SO₂NR^(8a)R^(8b);

R⁴ is selected from hydrogen, C₁₋₆ alkyl C₃₋₆ cycloalkyl, or halosubstitutedC₁₋₆ alkyl COCH₃, and SO₂Me;

R⁵ is

wherein p is 0, 1 or 2 and X is CH₂ or O;

R⁶ is methyl, chloro or CHxFn wherein n is 1, 2, or 3, x is 0, 1 or 2 and n and x add up to 3;

R⁷ is OH, C₁₋₆alkoxy, NR^(8a)R^(8b), NHCOR⁹, NHSO₂R⁹, SOqR⁹;

R^(8a) is H or C₁₋₆alkyl;

R^(8b) is H or C₁₋₆alkyl;

R⁹ is C₁₋₆alkyl;

q is 0, 1 or 2;

d is 0, 1, 2 or 3

and pharmaceutically acceptable derivatives thereof.

In one particular embodiment R¹ is hydrogen.

In one particular embodiment R⁴ is C₁₋₆alkyl or hydrogen, more preferably methyl or hydrogen even more preferably hydrogen.

Alternatively R¹ and R² together with N to which they are attached form an optionally substituted 5- or 6-membered non-aromatic heterocyclyl ring.

When R¹ and R² together with N to which they are attached form a 4- to 8-membered non-aromatic heterocyclyl ring which is substituted, or when R³ is substituted, the substituent or substituents are preferably selected from: C₁₋₆ alkyl C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo or a sulfonyl group. Additionally the optional substituent(s) can be chosen from methylsulfonyl, NR^(8a)R^(8b), NHCOCH₃, (═O), or —CONHCH₃.

In one particular embodiment R⁶ is CHxFn, for example CF₃, CHF₂, CH₂F, more preferably CF₃.

In one particular embodiment R⁵ is

wherein p is 0, 1 or 2;

In one particular embodiment R⁷ is OH.

In one particular embodiment R³ is an optionally substituted 4- to 8-membered non-aromatic heterocyclyl group, an optionally substituted C₃₋₈ cycloalkyl group, an optionally substituted straight or branched C₁₋₁₀ alkyl or R⁵.

In one particular embodiment when R³ is an optionally substituted C₃₋₈cycloalkyl group or an optionally substituted 4- to 8-membered nonaromatic heterocyclyl, m is 1.

In one particular embodiment R³ is an optionally substituted C₃₋₆cycloalkyl group or an optionally substituted 4- or 6-membered nonaromatic heterocyclyl.

In one particular embodiment R¹ and R² together with N to which they are attached form a 4- to 8-membered non-aromatic heterocyclyl ring which is selected from pyrrolidinyl, morpholinyl, piperizinyl, piperidinyl and tetrahydropyridinyl.

In one particular embodiment when R³ is nonaromatic heterocyclyl it is selected from pyrrolidinyl, tetrahydrofuranyl, tetrahydrothiophenyl, morpholinyl, piperidinyl, piperazinyl, tetrahydropyranyl, tetrahydrothiopyranyl, thiomorpholinyl, thiomorpholinyl-s,s-dioxide, tetrahydropyridinyl.

In one particular embodiment the compound of formula (I) is a compound of formula (Ib)

wherein;

R³ is pyrrolidinyl, tetrahydrofuranyl, tetrahydrothiophenyl, morpholinyl, piperidinyl, piperazinyl, tetrahydropyranyl, tetrahydrothiopyranyl, thiomorpholinyl, thiomorpholinyl-s,s-dioxide, tetrahydropyridinyl, a C₃₋₈ cycloalkyl group, any of which can be unsubstituted or substituted by one, two or three substituents selected from C₁₋₆ alkyl, C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo, sulfonyl group, methylsulfonyl, NR^(8a)R^(8b), NHCOCH₃, (═O), and —CONHCH₃;

R¹⁰ is selected from chloro, fluoro, bromo, cyano, CF₃, methyl, CF₃O— or SCH₃ and methoxy;

R⁴ is selected from hydrogen or methyl;

R^(8a) is H or C₁₋₆alkyl;

R^(8b) is H or C₁₋₆alkyl;

m is 0 or 1

d is 0, 1, 2 or 3 and

pharmaceutically acceptable derivatives thereof.

In one particular embodiment m is 1.

In one particular embodiment the compound of formula (I) is a compound of formula (Ic)

wherein;

R¹ and R² together with N to which they are attached form a 5- to 6-membered non-aromatic ring selected from pyrrolidinyl, morpholinyl, piperizinyl, piperidinyl and tetrahydropyridinyl, any of which can be unsubstituted or substituted by one, two or three substituents selected from C₁₋₆ alkyl, C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo, sulfonyl group, methylsulfonyl, NR^(8a)R^(8b), NHCOCH₃, (═O), and —CONHCH₃.

R¹⁰ is selected from chloro, fluoro, bromo, cyano, CF₃, methyl, CF₃O— or SCH₃ and methoxy;

R⁴ is hydrogen or methyl;

R^(8a) is H or C₁₋₆alkyl;

R^(8b) is H or C₁₋₆alkyl;

d is 0, 1, 2 or 3 and

-   -   pharmaceutically acceptable derivatives thereof.

In one particular embodiment the compounds are selective for CB2 over CB1. Preferably the compounds are 100 fold selective i.e. compounds of formula (I) have an EC50 value at the cloned human cannabinoid CB2 receptor of at least 100 times the EC50 values at the cloned human cannabinoid CB1 receptor or have less than 10% efficacy at the CB1 receptor.

The invention is described using the following definitions unless otherwise indicated.

The term “pharmaceutically acceptable derivative” means any pharmaceutically acceptable salt, ester, salt of such ester or solvate of the compounds of formula (I), or any other compound which upon administration to the recipient is capable of providing (directly or indirectly) a compound of formula (I) or an active metabolite or residue thereof.

It will be appreciated by those skilled in the art that compounds of formula (I) may be modified to provide pharmaceutically acceptable derivatives thereof at any of the functional groups in the compounds, and that the compounds of formula (I) may be derivatised at more than one position.

It will be appreciated that, for pharmaceutical use, the salts referred to above will be physiologically acceptable salts, but other salts may find use, for example in the preparation of compounds of formula (I) and the physiological acceptable salts thereof. Pharmaceutically acceptable salts include those described by Berge, Bighley and Monkhouse, J. Pharm. Sci., 1977, 66, 1-19. The term “pharmaceutically acceptable salts” refers to salts prepared from pharmaceutically acceptable non-toxic bases including inorganic bases and organic bases. Salts derived from inorganic bases include aluminum, ammonium, calcium, copper, ferric, ferrous, lithium, magnesium, manganic salts, manganous, potassium, sodium, zinc, and the like. Salts derived from pharmaceutically acceptable organic non-toxic bases include salts of primary, secondary, and tertiary amines, substituted amines including naturally occurring substituted amines, cyclic amines, and basic ion exchange resins, such as arginine, betaine, caffeine, choline, N,N′-dibenzylethylenediamine, diethylamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, ethanolamine, ethylenediamine, N-ethylmorpholine, N-ethylpiperidine, glucamine, glucosamine, histidine, hydrabamine, isopropylamine, lysine, methylglucamine, morpholine, piperazine, piperidine, polyamine resins, procaine, purines, theobromine, triethylamine, trimethylamine, tripropyl amine, tromethamine, and the like. When the compound of the present invention is basic, salts may be prepared from pharmaceutically acceptable non-toxic acids, including inorganic and organic acids. Such acids include acetic, benzenesulfonic, benzoic, camphorsulfonic, citric, ethanesulfonic, fumaric, gluconic, glutamic, hydrobromic, hydrochloric, isethionic, lactic, maleic, malic, mandelic, methanesulfonic, mucic, nitric, pamoic, pantothenic, phosphoric, succinic, sulfuric, tartaric, p-toluenesulfonic acid, and the like.

Preferred examples of pharmaceutically acceptable salts include the ammonium, calcium, magnesium, potassium, and sodium salts, and those formed from maleic, fumaric, benzoic, ascorbic, pamoic, succinic, hydrochloric, sulfuric, bismethylenesalicylic, methanesulfonic, ethanedisulfonic, propionic, tartaric, salicylic, citric, gluconic, aspartic, stearic, palmitic, itaconic, glycolic, p-aminobenzoic, glutamic, benzenesulfonic, cyclohexylsulfamic, phosphoric and nitric acids.

The terms ‘halogen or halo’ are used to represent fluorine, chlorine, bromine or iodine.

The term ‘alkyl’ as a group or part of a group means a straight or branched chain alkyl group or combinations thereof, for example a methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, t-butyl, pentyl, hexyl, 1,1-dimethylethyl, or combinations thereof.

The term ‘alkoxy’ as a group or as part of a group means a straight, branched or cyclic chain alkyl group having an oxygen atom attached to the chain, for example a methoxy, ethoxy, n-propoxy, i-propoxy, n-butoxy, s-butoxy, t-butoxy group, pentoxy, hexyloxy group, cyclopentoxy or cyclohexyloxy group.

The term ‘cycloalkyl’ means a closed non-aromatic ring, for example cyclobutyl, cyclopentyl, cyclohexyl or cycloheptyl, or cyclooctyl.

The term ‘cycloalkenyl” as a group or part of a group means a non-aromatic ring, containing at least one CH═CH moiety for example cyclobutenyl, cyclopentenyl, cyclohexenyl or cycloheptenyl, or cyclooctenyl.

When R¹ and R² taken together with the N to which they are attached form an optionally substituted heterocyclyl ring, the ring may optionally contain 1, 2, 3 or 4 further heteroatoms. The ring may be saturated or unsaturated. Preferably the further heteroatoms are selected from oxygen, nitrogen or sulphur. An example of a 4-membered heterocyclyl ring is azetidinyl. Examples of 5-membered heterocyclyl rings include pyrrolidinyl. Examples of 6-membered heterocyclyl rings are morpholinyl, piperizinyl or piperidinyl. An additional example is tetrahydropyridinyl. Examples of a 7-membered heterocyclyl ring are azapine or oxapine. Examples of 8-membered heterocyclyl rings are azacyclooctanyl, azaoxacyclooctanyl or azathiacyclooctanyl.

When R³ is an optionally substituted non-aromatic heterocyclyl group, the ring may contain 1, 2, 3, or 4 heteroatoms. Preferably the heteroatoms are selected from oxygen, nitrogen or sulphur. Examples of 4-membered groups are 2- or 3-azetidinyl, oxetanyl, thioxetanyl, thioxetanyl-s-oxide, thioxetanyl-s,s-dioxide. Examples of 5-membered heterocyclyl groups in this instance include dioxalanyl, pyrrolidinyl or tetrahydrofuranyl or tetrahydrothiophenyl. Examples of 6-membered heterocyclyl groups are morpholinyl, piperidinyl, piperazinyl, tetrahydropyranyl, tetrahydrothiopyranyl, thiomorpholinyl or thiomorpholinyl-s,s-dioxide. An additional example is tetrahydropyridinyl. Examples of a 7-membered heterocyclyl ring are azapine or oxapine. Examples of 8-membered groups are azacyclooctanyl, azaoxacyclooctanyl or azathiacyclooctanyl, oxacylcooctanyl, or thiacyclooctanyl.

In one particular embodiment compounds of the present invention can be selected from:

-   1-[2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-piperidin-1-ylmethanone; -   2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   1-[2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone; -   2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-Phenylamino-4-trifluoromethylpyrimidine-5-carboxylic acid     cyclohexylmethyl-amide; -   1-[2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone; -   1-[2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone; -   1-[2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone; -   1-[2-(2,5-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone; -   1-[2-(3-Fluorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone; -   1-[2-(3-Bromophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone; -   1-[2-(3-Bromophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-piperidin-4-yl-methanone; -   1-[2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone; -   2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidin-5-carboxylic acid     cyclopentylamide; -   2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclohexylmethyl-amide -   2-(3-Fluorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(3-Bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid     cyclohexylmethyl-amide; -   2-(2,6-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidin-5-carboxylic acid     cyclobutylamide; -   2-(3-Fluorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3-Bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid     (tetrahydropyran-4-ylmethyl)-amide; -   2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(2,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3-Methoxyphenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3-Fluorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (cyclopentylmethyl)-amide; -   2-(3-Bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid     (cyclopentylmethyl)-amide; -   2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(2,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(2,6-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(3-Methoxyphenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(3-Bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid     cyclobutylamide; -   2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclobutylamide; -   2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclobutylamide; -   2-(2,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclobutylamide; -   2-(2,6-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclobutylamide; -   2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclobutylamide; -   2-(3-Methoxyphenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclobutylamide; -   2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2,6-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   1-[2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-(morpholin-4-yl)-methanone; -   2-(3-Methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (1-hydroxycyclohexylmethyl)-amide; -   2-(3-Bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (1-hydroxycyclohexylmethyl)-amide; -   2-(3-Chloro-4-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(3-Chloro-2-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(5-Chloro-2-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(3,5-Difluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(4-Chloro-2-trifluoromethylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(3-Cyanophenylamino)-4-trifluoromethyl-pyrimidin-5-carboxylic acid     cyclohexylmethyl-amide; -   2-(3-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(4-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(4-Cyanophenylamino)-4-trifluoromethyl-pyrimidin-5-carboxylic acid     (tetrahydropyran-4-ylmethyl)-amide; -   2-(4-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(3-Methoxy-5-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3,5-Bis-trifluoromethyl-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3-Bromo-5-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3-Fluoro-5-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(2-Fluoro-3-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(2-Methylthio-3-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(5-Chloro-2-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (cyclopentylmethyl)-amide; -   2-(3-Chloro-4-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3-Chloro-2-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(4-Chloro-3-methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(4-Chloro-3-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydropyran-4-ylmethyl)-amide; -   2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-methyl-amide; -   2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-methyl-amide; -   2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopentylmethyl-methyl-amide; -   2-(5-Chloro-2-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3,5-Difluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3-Chloro-4-trifluoromethoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3-Chloro-4-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3-Chloro-2-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3-Fluoro-4-trifluoromethylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3-Chloro-4-cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3-Fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3-Bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2,3-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2,5-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2,6-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3-Methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3,5-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(3-Bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopentylamide; -   2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopentylamide; -   2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopropylamide; -   2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (3,3-dimethylbutyl)-amide; -   2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid methyl-(tetrahydro-pyran-4-ylmethyl)-amide; -   2-(2-Fluoro-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(2-Fluoro-5-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(3,5-Difluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(4-Fluoro-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(4-Trifluoromethoxy-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(4-Cyano-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(4-Trifluoromethyl-3-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(4-Cyano-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(2,4-Dichloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (1,1-dioxo-hexahydro-1/⁶-thiopyran-4-yl)-amide; -   2-(2,4-Difluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2-Chloro-4-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2,4-Difluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2-Chloro-4-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2-Chloro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2-Fluoro-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2-Chloro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2-Fluoro-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2-Fluoro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2-Bromo-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2-Fluoro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2-Fluoro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(2-Chloro-4-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(2-Chloro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(2-Chloro-4-cyano-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(2-Chloro-4-trifluoromethyl-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(2-Chloro-4-cyano-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2-Bromo-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2-Bromo-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(3-Bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopropylmethyl-amide; -   2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopropylmethyl-amide; -   2-(2,3-Difluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2-Fluoro-3-trifluoromethyl-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(2-Chloro-4-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(4-Chloro-3-methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(5-Chloro-2-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclohexylmethyl-amide; -   2-(3-Chloro-4-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(3-Chloro-2-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(2-Chloro-5-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclopentylmethyl-amide; -   2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(Phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid     cyclopentylmethyl-amide -   2-(2-Fluoro-3-trifluoromethyl-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid cyclobutylmethyl-amide; -   2-(2-Trifluoromethyl-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydro-pyran-4-ylmethyl)-amide; -   2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydrothiopyran-4-ylmethyl) amide; -   2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic     acid (tetrahydrothiopyran-4-ylmethyl) amide;     and pharmaceutically acceptable derivatives thereof.     Compounds of formula (I) can be prepared as set forth in the     following schemes:

wherein L is a leaving group, for example halo, PG is a protecting group for example methyl, ethyl or benzyl, X is a leaving group for example halo, OC₁₋₆alkyl, e.g. O-methyl or O-ethyl or NR^(a)R^(b) wherein R^(a) and R^(b) are independently selected from C₁₋₆ alkyl, e.g. methyl, and R¹, R², R⁴, R⁶ and Y are as defined for compounds of formula (I).

wherein L₁ and L₂ are leaving groups independently selected from halo, for example chloro, R¹, R², R⁴, R⁶ and Y are as defined for compounds of formula (I).

It is to be understood that the present invention encompasses all isomers of compounds of formula (I) and their pharmaceutically acceptable derivatives, including all geometric, tautomeric and optical forms, and mixtures thereof (e.g. racemic mixtures). Where additional chiral centres are present in compounds of formula (I), the present invention includes within its scope all possible diastereoisomers, including mixtures thereof. The different isomeric forms may be separated or resolved one from the other by conventional methods, or any given isomer may be obtained by conventional synthetic methods or by stereospecific or asymmetric syntheses.

The subject invention also includes isotopically-labeled compounds, which are identical to those recited in formulas I and following, but for the fact that one or more atoms are replaced by an atom having an atomic mass or mass number different from the atomic mass or mass number usually found in nature. Examples of isotopes that can be incorporated into compounds of the invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorous, fluorine, iodine, and chlorine, such as ³H, ¹¹C, ¹⁴C, ¹⁸F, ¹²³I and ¹²⁵I.

Compounds of the present invention and pharmaceutically acceptable salts of said compounds that contain the aforementioned isotopes and/or other isotopes of other atoms are within the scope of the present invention. Isotopically-labeled compounds of the present invention, for example those into which radioactive isotopes such as ³H, ¹⁴C are incorporated, are useful in drug and/or substrate tissue distribution assays. Tritiated, i.e., ³H, and carbon-14, i.e., ¹⁴C, isotopes are particularly preferred for their ease of preparation and detectability. ¹¹C and ⁸F isotopes are particularly useful in PET (positron emission tomography), and ¹²⁵I isotopes are particularly useful in SPECT (single photon emission computerized tomography), all useful in brain imaging. Further, substitution with heavier isotopes such as deuterium, i.e., ²H, can afford certain therapeutic advantages resulting from greater metabolic stability, for example increased in vivo half-life or reduced dosage requirements and, hence, may be preferred in some circumstances. Isotopically labeled compounds of formula I and following of this invention can generally be prepared by carrying out the procedures disclosed in the Schemes and/or in the Examples below, by substituting a readily available isotopically labeled reagent for a non-isotopically labeled reagent.

The compounds of formula (I) may be prepared in crystalline or non-crystalline form, and, if crystalline, may optionally be hydrated or solvated. This invention includes within its scope stoichiometric hydrates or solvates as well as compounds containing variable amounts of water and/or solvent.

The compounds of the invention bind selectively to the CB2 receptor, and are therefore useful in treating CB2 receptor mediated diseases.

In view of their ability to bind to the CB2 receptor, the compounds of the invention may be useful in the treatment of the disorders that follow. Thus, the compounds of formula (I) may be useful as analgesics. For example they may be useful in the treatment of chronic inflammatory pain (e.g. pain associated with rheumatoid arthritis, osteo-arthritis, rheumatoid spondylitis, gouty arthritis and juvenile arthritis) including the property of disease modification and joint structure preservation; musculoskeletal pain; lower back and neck pain; sprains and strains; neuropathic pain; sympathetically maintained pain; myositis; pain associated with cancer and fibromyalgia; pain associated with migraine; pain associated with influenza or other viral infections, such as the common cold; rheumatic fever; pain associated with functional bowel disorders such as non-ulcer dyspepsia, non-cardiac chest pain and irritable bowel syndrome; pain associated with myocardial ischemia; post operative pain; headache; toothache; and dysmenorrhea.

The compounds of the invention may also be useful disease modification or joint structure preservation in multiple sclerosis, rheumatoid arthritis, osteo-arthritis, rheumatoid spondylitis, gouty arthritis and juvenile arthritis.

The compounds of the invention may be particularly useful in the treatment of neuropathic pain. Neuropathic pain syndromes can develop following neuronal injury and the resulting pain may persist for months or years, even after the original injury has healed. Neuronal injury may occur in the peripheral nerves, dorsal roots, spinal cord or certain regions in the brain. Neuropathic pain syndromes are traditionally classified according to the disease or event that precipitated them. Neuropathic pain syndromes include: diabetic neuropathy; sciatica; non-specific lower back pain; multiple sclerosis pain; fibromyalgia; HIV-related neuropathy; post-herpetic neuralgia; trigeminal neuralgia; and pain resulting from physical trauma, amputation, cancer, toxins or chronic inflammatory conditions. These conditions are difficult to treat and although several drugs are known to have limited efficacy, complete pain control is rarely achieved. The symptoms of neuropathic pain are incredibly heterogeneous and are often described as spontaneous shooting and lancinating pain, or ongoing, burning pain. In addition, there is pain associated with normally non-painful sensations such as “pins and needles” (paraesthesias and dysesthesias), increased sensitivity to touch (hyperesthesia), painful sensation following innocuous stimulation (dynamic, static or thermal allodynia), increased sensitivity to noxious stimuli (thermal, cold, mechanical hyperalgesia), continuing pain sensation after removal of the stimulation (hyperpathia) or an absence of or deficit in selective sensory pathways (hypoalgesia).

The compounds of formula (I) may also be useful in the treatment of fever.

The compounds of formula (I) may also be useful in the treatment of inflammation, for example in the treatment of skin conditions (e.g. sunburn, burns, eczema, dermatitis, psoriasis); ophthalmic diseases such as glaucoma, retinitis, retinopathies, uveitis and of acute injury to the eye tissue (e.g. conjunctivitis); lung disorders (e.g. asthma, bronchitis, emphysema, allergic rhinitis, respiratory distress syndrome, pigeon fancier's disease, farmer's lung, chronic obstructive pulmonary disease, (COPD); gastrointestinal tract disorders (e.g. aphthous ulcer, Crohn's disease, atopic gastritis, gastritis varialoforme, ulcerative colitis, coeliac disease, regional ileitis, irritable bowel syndrome, inflammatory bowel disease, gastro esophageal reflux disease); organ transplantation; other conditions with an inflammatory component such as vascular disease, migraine, periarteritis nodosa, thyroiditis, aplastic anaemia, Hodgkin's disease, sclerodoma, myaesthenia gravis, multiple sclerosis, sorcoidosis, nephrotic syndrome, Bechet's syndrome, polymyositis, gingivitis, myocardial ischemia, pyrexia, systemic lupus erythematosus, tendinitis, bursitis, and Sjogren's syndrome.

The compounds of formula (I) are also useful in the treatment of immunological diseases such as autoimmune diseases, immunological deficiency diseases or organ transplantation. The compounds of formula (I) are also effective in increasing the latency of HIV infection.

The compounds of formula (I) are also useful in the treatment of diseases of abnormal platelet function (e.g. occlusive vascular diseases).

The compounds of formula (I) are also useful for the preparation of a drug with diuretic action.

The compounds of formula (I) are also useful in the treatment of impotence or erectile dysfunction.

The compounds of formula (I) are also useful for attenuating the hemodynamic side effects of non-steroidal anti-inflammatory drugs (NSAID's) and cyclooxygenase-2 (COX-2) inhibitors.

The compounds of formula (I) are also useful in the treatment of neurodegenerative diseases and neurodegeneration such as dementia, particularly degenerative dementia (including senile dementia, Alzheimer's disease, Pick's disease, Huntingdon's chorea, Parkinson's disease and Creutzfeldt-Jakob disease, motor neuron disease); vascular dementia (including multi-infarct dementia); as well as dementia associated with intracranial space occupying lesions; trauma; infections and related conditions (including HIV infection); dementia in Parkinson's disease; metabolism; toxins; anoxia and vitamin deficiency; and mild cognitive impairment associated with ageing, particularly Age Associated Memory Impairment. The compounds may also be useful for the treatment of amyotrophic lateral sclerosis (ALS) and neuroinflammation.

The compounds of formula (I) are also useful in neuroprotection and in the treatment of neurodegeneration following stroke, cardiac arrest, pulmonary bypass, traumatic brain injury, spinal cord injury or the like.

The compounds of formula (I) are also useful in the treatment of tinnitus.

The compounds of formula (I) are also useful in the treatment of psychiatric disease for example schizophrenia, depression (which term is used herein to include bipolar depression, unipolar depression, single or recurrent major depressive episodes with or without psychotic features, catatonic features, melancholic features, atypical features or postpartum onset, seasonal affective disorder, dysthymic disorders with early or late onset and with or without atypical features, neurotic depression and social phobia, depression accompanying dementia for example of the Alzheimer's type, schizoaffective disorder or the depressed type, and depressive disorders resulting from general medical conditions including, but not limited to, myocardial infarction, diabetes, miscarriage or abortion, etc), anxiety disorders (including generalised anxiety disorder and social anxiety disorder), panic disorder, agoraphobia, social phobia, obsessive compulsive disorder and post-traumatic stress disorder, memory disorders, including dementia, amnesic disorders and age-associated memory impairment, disorders of eating behaviours, including anorexia nervosa and bulimia nervosa, sexual dysfunction, sleep disorders (including disturbances of circadian rhythm, dyssomnia, insomnia, sleep apnea and narcolepsy), withdrawal from abuse of drugs such as of cocaine, ethanol, nicotine, benzodiazepines, alcohol, caffeine, phencyclidine (phencyclidine-like compounds), opiates (e.g. cannabis, heroin, morphine), amphetamine or amphetamine-related drugs (e.g. dextroamphetamine, methylamphetamine) or a combination thereof.

The compounds of formula (I) are also useful in preventing or reducing dependence on, or preventing or reducing tolerance or reverse tolerance to, a dependence-inducing agent. Examples of dependence inducing agents include opioids (e.g. morphine), CNS depressants (e.g. ethanol), psychostimulants (e.g. cocaine) and nicotine.

The compounds of formula (I) are also useful in the treatment of kidney dysfunction (nephritis, particularly mesangial proliferative glomerulonephritis, nephritic syndrome), liver dysfunction (hepatitis, cirrhosis), gastrointestinal dysfunction (diarrhoea) and colon cancer.

It is to be understood that references to treatment includes both treatment of established symptoms and prophylactic treatment unless explicitly stated otherwise.

According to a further aspect of the invention, we provide a compound of formula (I) or a pharmaceutically acceptable derivative thereof for use in human or veterinary medicine.

According to another aspect of the invention, we provide a compound of formula (I) or a pharmaceutically acceptable derivative thereof for use in the treatment of a condition which is mediated by the activity of cannabinoid 2 receptors.

According to a further aspect of the invention, we provide a method of treating a human or animal subject suffering from a condition which is mediated by the activity of cannabinoid 2 receptors which comprises administering to said subject a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable derivative thereof.

According to a further aspect of the invention we provide a method of treating a human or animal subject suffering from an immune disorder, an inflammatory disorder, pain, rheumatoid arthritis, multiple sclerosis, osteoarthritis or osteoporosis which method comprises administering to said subject an effective amount of a compound of formula (I) or a pharmaceutically acceptable derivative thereof. Preferably the pain is selected from inflammatory pain, visceral pain, cancer pain, neuropathic pain, lower back pain, muscular skeletal, post operative pain, acute pain and migraine. More preferably the inflammatory pain is pain associated with rheumatoid arthritis or osteoarthritis.

According to another aspect of the invention is provided the use of a compound of formula (I) or a pharmaceutically acceptable derivative thereof for the manufacture of a therapeutic agent for the treatment or prevention of a condition such as an immune disorder, an inflammatory disorder, pain, rheumatoid arthritis, multiple sclerosis, osteoarthritis or osteoporosis

Preferably the pain is selected from inflammatory pain, visceral pain, cancer pain, neuropathic pain, lower back pain, muscular skeletal, post operative pain, acute pain and migraine. More preferably the inflammatory pain is pain associated with rheumatoid arthritis or osteoarthritis.

In order to use a compound of formula (I) or a pharmaceutically acceptable derivative thereof for the treatment of humans and other mammals it is normally formulated in accordance with standard pharmaceutical practice as a pharmaceutical composition. Therefore in another aspect of the invention is provided a pharmaceutical composition comprising a compound of formula (I) or a pharmaceutically acceptable derivative thereof adapted for use in human or veterinary medicine.

As used herein, “modulator” means both antagonist, full or partial agonist and inverse agonist. In one embodiment of the present modulators are agonists.

The term “treatment” or “treating” as used herein includes the treatment of established disorders and also includes the prophylaxis thereof. The term “prophylaxis” is used herein to mean preventing symptoms in an already afflicted subject or preventing recurrence of symptoms in an afflicted subject and is not limited to complete prevention of an affliction.

Compounds of formula (I) and their pharmaceutically acceptable derivatives may be administered in a standard manner for the treatment of the indicated diseases, for example orally, parenterally, sub-lingually, dermally, intranasally, transdermally, rectally, via inhalation or via buccal administration.

Compositions of formula (I) and their pharmaceutically acceptable derivatives which are active when given orally can be formulated as syrups, tablets, capsules and lozenges. A syrup formulation will generally consist of a suspension or solution of the compound or salt in a liquid carrier for example, ethanol, peanut oil, olive oil, glycerine or water with a flavouring or colouring agent. Where the composition is in the form of a tablet, any pharmaceutical carrier routinely used for preparing solid formulations may be used. Examples of such carriers include magnesium stearate, terra alba, talc, gelatin, acacia, stearic acid, starch, lactose and sucrose. Where the composition is in the form of a capsule, any routine encapsulation is suitable, for example using the aforementioned carriers in a hard gelatin capsule shell. Where the composition is in the form of a soft gelatin shell capsule any pharmaceutical carrier routinely used for preparing dispersions or suspensions may be considered, for example aqueous gums, celluloses, silicates or oils, and are incorporated in a soft gelatin capsule shell.

Typical parenteral compositions consist of a solution or suspension of a compound or derivative in a sterile aqueous or non-aqueous carrier optionally containing a parenterally acceptable oil, for example polyethylene glycol, polyvinylpyrrolidone, lecithin, arachis oil or sesame oil.

Typical compositions for inhalation are in the form of a solution, suspension or emulsion that may be administered as a dry powder or in the form of an aerosol using a conventional propellant such as dichlorodifluoromethane or trichlorofluoromethane.

A typical suppository formulation comprises a compound of formula (I) or a pharmaceutically acceptable derivative thereof which is active when administered in this way, with a binding and/or lubricating agent, for example polymeric glycols, gelatins, cocoa-butter or other low melting vegetable waxes or fats or their synthetic analogs.

Typical dermal and transdermal formulations comprise a conventional aqueous or non-aqueous vehicle, for example a cream, ointment, lotion or paste or are in the form of a medicated plaster, patch or membrane.

Preferably the composition is in unit dosage form, for example a tablet, capsule or metered aerosol dose, so that the patient may administer a single dose.

Each dosage unit for oral administration contains suitably from 0.01 mg/Kg to 500 mg/Kg for example 0.1 mg to 500 mg/Kg, and preferably from 0.01 mg to 100 mg/Kg for example 1 mg/Kg to 100 mg/Kg, and each dosage unit for parenteral administration contains suitably from 0.1 mg to 100 mg/Kg, of a compound of formula (I) or a pharmaceutically acceptable derivative thereof calculated as the free acid. Each dosage unit for intranasal administration contains suitably 1-400 mg and preferably 10 to 200 mg per person. A topical formulation contains suitably 0.01 to 5.0% of a compound of formula (I).

The daily dosage regimen for oral administration is suitably about 0.01 mg/Kg to 40 mg/Kg, of a compound of formula (I) or a pharmaceutically acceptable derivative thereof calculated as the free acid. The daily dosage regimen for parenteral administration is suitably about 0.001 mg/Kg to 40 mg/Kg, of a compound of formula (I) or a pharmaceutically acceptable derivative thereof calculated as the free acid. The daily dosage regimen for intranasal administration and oral inhalation is suitably about 10 to about 500 mg/person. The active ingredient may be administered from 1 to 6 times a day, sufficient to exhibit the desired activity.

It may be advantageous to prepare the compounds of the present invention as nanoparticles. This may improve the oral bioavailability of the compounds. For the purposes of the present invention “nanoparticulate” is defined as solid particles with 50% of the particles having a particle size of less than 1 μm, more preferably less than 0.75 μm

The particle size of the solid particles of compound (I) may be determined by laser diffraction. A suitable machine for determining particle size by laser diffraction is a Lecotrac laser particle size analyser, using an HELOS optical bench fitted with a QUIXEL dispersion unit.

Numerous processes for the synthesis of solid particles in nanoparticulate form are known. Typically these processes involve a milling process, preferably a wet milling process in the presence of a surface modifying agent that inhibits aggregation and/or crystal growth of the nanoparticles once created. Alternatively these processes may involve a precipitation process, preferably a process of precipitation in an aqueous medium from a solution of the drug in a non-aqueous solvent.

Accordingly, in a further aspect, the present invention provides a process for preparing compound (I) in nanoparticulate form as hereinbefore defined, which process comprises milling or precipitation.

Representative processes for the preparation of solid particles in nanoparticulate form are described in the patents and publications listed below.

U.S. Pat. No. 4,826,689 to Violanto & Fischer, U.S. Pat. No. 5,145,684 to Liversidge et al U.S. Pat. No. 5,298,262 to Na & Rajagopalan, U.S. Pat. No. 5,302,401 Liversidge et al U.S. Pat. No. 5,336,507 to Na & Rajagopalan, U.S. Pat. No. 5,340,564 to Illig & Sarpotdar U.S. Pat. No. 5,346,702 to Na Rajagopalan, U.S. Pat. No. 5,352,459 to Hollister et al U.S. Pat. No. 5,354,560 to Lovrecich, U.S. Pat. No. 5,384,124 to Courteille et al, U.S. Pat. No. 5,429,824 to June, U.S. Pat. No. 5,503,723 to Ruddy et al, U.S. Pat. No. 5,510,118 to Bosch et al, U.S. Pat. No. 5,518 to Bruno et al, U.S. Pat. No. 5,518,738 to Eickhoff et al, U.S. Pat. No. 5,534,270 to De Castro, U.S. Pat. No. 5,536,508 to Canal et al, U.S. Pat. No. 5,552,160 to Liversidge et al, U.S. Pat. No. 5,560,931 to Eickhoff et al, U.S. Pat. No. 5,560,932 to Bagchi et al, U.S. Pat. No. 5,565,188 to Wong et al, U.S. Pat. No. 5,571,536 to Eickhoff et al, U.S. Pat. No. 5,573,783 to Desieno & Stetsko, U.S. Pat. No. 5,580,579 to Ruddy et al, U.S. Pat. No. 5,585,108 to Ruddy et al, U.S. Pat. No. 5,587,143 to Wong, U.S. Pat. No. 5,591,456 to Franson et al, U.S. Pat. No. 5,622,938 to Wong, U.S. Pat. No. 5,662,883 to Bagchi et al, U.S. Pat. No. 5,665,331 to Bagchi et al, U.S. Pat. No. 5,718,919 to Ruddy et al, U.S. Pat. No. 5,747,001 to Wiedmann et al, WO93/25190, WO96/24336, WO 97/14407, WO 98/35666, WO 99/65469, WO 00/18374, WO 00/27369, WO 00/30615 and WO 01/41760.

Such processes may be readily adapted for the preparation of compound (I) in nanoparticulate form. Such processes form a further aspect of the invention.

The process of the present invention preferably uses a wet milling step carried out in a mill such as a dispersion mill in order to produce a nanoparticulate form of the compound. The present invention may be put into practice using a conventional wet milling technique, such as that described in Lachman et al., The Theory and Practice of Industrial Pharmacy, Chapter 2, “Milling” p. 45 (1986).

In a further refinement, WO02/00196 (SmithKline Beecham plc) describes a wet milling procedure using a mill in which at least some of the surfaces are made of nylon (polyamide) comprising one or more internal lubricants, for use in the preparation of solid particles of a drug substance in nanoparticulate form.

In another aspect the present invention provides a process for preparing compounds of the invention in nanoparticulate form comprising wet milling a suspension of compound in a mill having at least one chamber and agitation means, said chamber(s) and/or said agitation means comprising a lubricated nylon, as described in WO02/00196.

The suspension of a compound of the invention for use in the wet milling is typically a liquid suspension of the coarse compound in a liquid medium. By “suspension” is meant that the compound is essentially insoluble in the liquid medium. Representative liquid media include an aqueous medium. Using the process of the present invention the average particle size of coarse compound of the invention may be up to 1 mm in diameter. This advantageously avoids the need to pre-process the compound.

In a further aspect of the invention the aqueous medium to be subjected to the milling comprises compound (I) present in from about 1% to about 40% w/w, preferably from about 10% to about 30% w/w, more preferably about 20% w/w.

The aqueous medium may further comprise one or more pharmaceutically acceptable water-soluble carriers which are suitable for steric stabilisation and the subsequent processing of compound (I) after milling to a pharmaceutical composition, e.g. by spray drying. Pharmaceutically acceptable excipients most suitable for steric stabilisation and spray-drying are surfactants such as poloxamers, sodium lauryl sulphate and polysorbates etc; stabilisers such as celluloses e.g. hydroxypropylmethyl cellulose; and carriers such as carbohydrates e.g. mannitol.

In a further aspect of the invention the aqueous medium to be subjected to the milling may further comprise hydroxypropylmethyl cellulose (HPMC) present from about 0.1 to about 10% w/w.

The process of the present invention may comprise the subsequent step of drying compound of the invention to yield a powder.

Accordingly, in a further aspect, the present invention provides a process for preparing a pharmaceutical composition contain a compound of the present invention which process comprises producing compound of formula (I) in nanoparticulate form optionally followed by drying to yield a powder.

A further aspect of the invention is a pharmaceutical composition comprising a compound of formula (I) or a pharmaceutically acceptable derivate thereof in which the compound of formula (I) or a pharmaceutically acceptable derivate thereof is present in solid particles in nanoparticulate form, in admixture with one or more pharmaceutically acceptable carriers or excipients.

By “drying” is meant the removal of any water or other liquid vehicle used during the process to keep compound of formula (I) in liquid suspension or solution. This drying step may be any process for drying known in the art, including freeze drying, spray granulation or spray drying. Of these methods spray drying is particularly preferred. All of these techniques are well known in the art. Spray drying/fluid bed granulation of milled compositions is carried out most suitably using a spray dryer such as a Mobile Minor Spray Dryer [Niro, Denmark], or a fluid bed drier, such as those manufactured by Glatt, Germany.

In a further aspect the invention provides a pharmaceutical composition as hereinbefore defined, in the form of a dried powder, obtainable by wet milling solid particles of compound of formula (I) followed by spray-drying the resultant suspension.

Preferably, the pharmaceutical composition as hereinbefore defined, further comprises HPMC present in less than 15% w/w, preferably in the range 0.1 to 10% w/w.

The CB₂ receptor compounds for use in the instant invention may be used in combination with other therapeutic agents, for example COX-2 inhibitors, such as celecoxib, deracoxib, rofecoxib, valdecoxib, parecoxib or COX-189; 5-lipoxygenase inhibitors; NSAID's, such as aspirin, diclofenac, indomethacin, nabumetone or ibuprofen; leukotriene receptor antagonists; DMARD's such as methotrexate; adenosine A1 receptor agonists; sodium channel blockers, such as lamotrigine; NMDA receptor modulators, such as glycine receptor antagonists; gabapentin and related compounds; tricyclic antidepressants such as amitriptyline; neurone stabilising antiepileptic drugs; mono-aminergic uptake inhibitors such as venlafaxine; opioid analgesics; local anaesthetics; 5HT₁ agonists, such as triptans, for example sumatriptan, naratriptan, zolmitriptan, eletriptan, frovatriptan, almotriptan or rizatriptan; EP₁ receptor ligands, EP₄ receptor ligands; EP₂ receptor ligands; EP₃ receptor ligands; EP₄ antagonists; EP₂ antagonists and EP₃ antagonists; bradykinin receptor ligands and vanilloid receptor ligand, antirheumatoid arthritis drugs, for example anti TNF drugs e.g. enbrel, remicade, anti-IL-1 drugs, or DMARDS e.g. leflunomide. When the compounds are used in combination with other therapeutic agents, the compounds may be administered either sequentially or simultaneously by any convenient route.

Additional COX-2 inhibitors are disclosed in U.S. Pat. No. 5,474,995 U.S. Pat. No. 5,633,272; U.S. Pat. No. 5,466,823, U.S. Pat. No. 6,310,099 and U.S. Pat. No. 6,291,523; and in WO 96/25405, WO 97/38986, WO 98/03484, WO 97/14691, WO99/12930, WO00/26216, WO00/52008, WO00/38311, WO01/58881 and WO02/18374.

The compound of the present invention may be administered in combination with other active substances such as 5HT3 antagonists, NK-1 antagonists, serotonin agonists, selective serotonin reuptake inhibitors (SSRI), noradrenaline re-uptake inhibitors (SNRI), tricyclic antidepressants and/or dopaminergic antidepressants.

Suitable 5HT3 antagonists which may be used in combination of the compound of the inventions include for example ondansetron, granisetron, metoclopramide.

Suitable serotonin agonists which may be used in combination with the compound of the invention include sumatriptan, rauwolscine, yohimbine, metoclopramide.

Suitable SSRIs which may be used in combination with the compound of the invention include fluoxetine, citalopram, femoxetine, fluvoxamine, paroxetine, indalpine, sertraline, zimeldine.

Suitable SNRIs which may be used in combination with the compound of the invention include venlafaxine and reboxetine.

Suitable tricyclic antidepressants which may be used in combination with a compound of the invention include imipramine, amitriptiline, chlomipramine and nortriptiline.

Suitable dopaminergic antidepressants which may be used in combination with a compound of the invention include bupropion and amineptine.

It will be appreciated that the compounds of any of the above combinations or compositions may be administered simultaneously (either in the same or different pharmaceutical formulations), separately or sequentially.

The invention thus provides, in a further aspect, a combination comprising a compound of formula (I) or a pharmaceutically acceptable derivative thereof together with a further therapeutic agent or agents.

The combinations referred to above may conveniently be presented for use in the form of a pharmaceutical formulation and thus pharmaceutical formulations comprising a combination as defined above together with a pharmaceutically acceptable carrier or excipient comprise a further aspect of the invention. The individual components of such combinations may be administered either sequentially or simultaneously in separate or combined pharmaceutical formulations.

When a compound of formula (I) or a pharmaceutically acceptable derivative thereof is used in combination with a second therapeutic agent active against the same disease state the dose of each compound may differ from that when the compound is used alone. Appropriate doses will be readily appreciated by those skilled in the art.

Determination of Cannabinoid CB1 Receptor Agonist Activity

The cannabinoid CB1 receptor agonist activity of the compounds of formula (I) was determined in accordance with the following experimental method.

Experimental Method

Yeast (Saccharomyces cerevisiae) cells expressing the human cannabinoid CB1 receptor were generated by integration of an expression cassette into the ura3 chromosomal locus of yeast strain MMY23. This cassette consisted of DNA sequence encoding the human CB1 receptor flanked by the yeast GPD promoter to the 5′ end of CB1 and a yeast transcriptional terminator sequence to the 3′ end of CB1. MMY23 expresses a yeast/mammalian chimeric G-protein alpha subunit in which the C-terminal 5 amino acids of Gpa1 are replaced with the C-terminal 5 amino acids of human Gαi3 (as described in Brown et al. (2000), Yeast 16:11-22). Cells were grown at 30° C. in liquid Synthetic Complete (SC) yeast media (Guthrie and Fink (1991), Methods in Enzymology, Vol. 194) lacking uracil, tryptophan, adenine and leucine to late logarithmic phase (approximately 6 OD₆₀₀/ml).

Agonists were prepared as 10 mM stocks in DMSO. EC₅₀ values (the concentration required to produce 50% maximal response) were estimated using dilutions of between 3- and 5-fold (BiomekFX, Beckman) into DMSO. Agonist solutions in DMSO (1% final assay volume) were transferred into black, clear bottom, microtitre plates from NUNC (96- or 384-well). Cells were suspended at a density of 0.2 OD₆₀₀/ml in SC media lacking histidine, uracil, tryptophan, adenine and leucine and supplemented with 10 mM 3-aminotriazole, 0.1M sodium phosphate pH 7.0, and 20 μM fluorescein di-β-D-glucopyranoside (FDGlu). This mixture (50 ul per well for 384-well plates, 200 ul per well for 96-well plates) was added to agonist in the assay plates (Multidrop 384, Labsystems). After incubation at 30° C. for 24 hours, fluorescence resulting from degradation of FDGlu to fluorescein due to exoglucanase, an endogenous yeast enzyme produced during agonist-stimulated cell growth, was determined using a Spectrofluor microtitre plate reader (Tecan; excitation wavelength: 485 nm; emission wavelength: 535 nm). Fluorescence was plotted against compound concentration and iteratively curve fitted using a four parameter fit to generate a concentration effect value. Efficacy (E_(max)) was calculated from the equation

E _(max)=Max_([compound X])−Min_([compound X])/Max_([HU210])−Min_([HU210])×100%

where Max_([compound X]) and Min_([compound X]) are the fitted maximum and minimum respectively from the concentration effect curve for compound X, and Max_([HU210]) and Min_([HU210]) are the fitted maximum and minimum respectively from the concentration effect curve for (6aR,10aR)-3-(1,1′-Dimethylheptyl)-6a,7,10,10a-tetrahydro-1-hydroxy-6,6-dimethyl-6H-dibenzo[b,d]pyran-9-methanol (HU210; available from Tocris). Equieffective molar ratio (EMR) values were calculated from the equation

EMR=EC_(50 [compound X])/EC_(50 [HU210])

Where EC_(50 [compound X]) is the EC₅₀ of compound X and EC_(50 [HU210]) is the EC₅₀ of HU210.

Compounds of the Examples tested according to this method had EC₅₀ values >2000 nM and/or efficacy values of <50% at the cloned human cannabinoid CB1 receptor.

Determination of Cannabinoid CB2 Receptor Agonist Activity

The cannabinoid CB2 receptor agonist activity of the compounds of formula (I) was determined in accordance with the following experimental method.

Experimental Method

Yeast (Saccharomyces cerevisiae) cells expressing the human cannabinoid CB2 receptor were generated by integration of an expression cassette into the ura3 chromosomal locus of yeast strain MMY23. This cassette consisted of DNA sequence encoding the human CB2 receptor flanked by the yeast GPD promoter to the 5′ end of CB2 and a yeast transcriptional terminator sequence to the 3′ end of CB2. MMY23 expresses a yeast/mammalian chimeric G-protein alpha subunit in which the C-terminal 5 amino acids of Gpa1 are replaced with the C-terminal 5 amino acids of human Gαi3 (as described in Brown et al. (2000), Yeast 16:11-22). Cells were grown at 30° C. in liquid Synthetic Complete (SC) yeast media (Guthrie and Fink (1991), Methods in Enzymology, Vol. 194) lacking uracil, tryptophan, adenine and leucine to late logarithmic phase (approximately 6 OD₆₀₀/ml).

Agonists were prepared as 10 mM stocks in DMSO. EC₅₀ values (the concentration required to produce 50% maximal response) were estimated using dilutions of between 3- and 5-fold (BiomekFX, Beckman) into DMSO. Agonist solutions in DMSO (1% final assay volume) were transferred into black, clear bottom, microtitre plates from NUNC (96- or 384-well). Cells were suspended at a density of 0.2 OD₆₀₀/ml in SC media lacking histidine, uracil, tryptophan, adenine and leucine and supplemented with 10 mM 3-aminotriazole, 0.1M sodium phosphate pH 7.0, and 20M fluorescein di-β-D-glucopyranoside (FDGlu). This mixture (50 ul per well for 384-well plates, 200 ul per well for 96-well plates) was added to agonist in the assay plates (Multidrop 384, Labsystems). After incubation at 30° C. for 24 hours, fluorescence resulting from degradation of FDGlu to fluorescein due to exoglucanase, an endogenous yeast enzyme produced during agonist-stimulated cell growth, was determined using a Spectrofluor microtitre plate reader (Tecan; excitation wavelength: 485 nm; emission wavelength: 535 nm). Fluorescence was plotted against compound concentration and iteratively curve fitted using a four parameter fit to generate a concentration effect value. Efficacy (E_(max)) was calculated from the equation

E _(max)=Max_([compound X])−Min_([compound X])/Max_([HU210])−Min_([HU210])×100%

where Max_([compound X]) and Min_([compound X]) are the fitted maximum and minimum respectively from the concentration effect curve for compound X, and Max_([HU210]) and Min_([HU210]) are the fitted maximum and minimum respectively from the concentration effect curve for (6aR,10aR)-3-(1,1′-Dimethylheptyl)-6a,7,10,10a-tetrahydro-1-hydroxy-6,6-dimethyl-6H-dibenzo[b,d]pyran-9-methanol (HU210; available from Tocris). Equieffective molar ratio (EMR) values were calculated from the equation

EMR=EC_(50 [compound X])/EC_(50 [HU210])

Where EC_(50 [compound X]) is the EC₅₀ of compound X and EC_(50 [HU210]) is the EC₅₀ of HU210.

Compounds of Examples 1 to 23, 31 to 56, 68, 163-256 tested according to this method had EC₅₀ values 20 to 300 nM and efficacy values of >50% at the cloned human cannabinoid CB2 receptor.

Compounds of Examples 24 to 30 and 73-113, and 257-259 tested according to this method had EC₅₀ values 300 to 1000 nM or efficacy values of >50% at the cloned human cannabinoid CB2 receptor.

Compounds of Examples 57-67, 69-72, 114-162, and 260-265 tested according to this method had EC₅₀ values >1000 nM or efficacy values of <50% at the cloned human cannabinoid CB2 receptor.

The following examples are illustrative, but not limiting of the embodiments of the present invention.

All NMR experimental data was recorded at 400 MHz.

Conditions, Hardware, and Software Used for Mass-Directed Autopurification Hardware

Waters 600 gradient pump, Waters 2700 Sample Manager, Waters Reagent Manager, Micromass ZMD mass spectrometer, Gilson 202—fraction collector, Gilson Aspec—waste collector.

Software

Micromass Masslynx version 3.5

Column

The column used is typically a Supelco ABZ+ column whose dimensions are 10 mm internal diameter by 100 mm in length. The stationary phase particle size is 5 μm.

Solvents

A. Aqueous solvent=Water+0.1% Formic Acid B. Organic solvent=MeCN:Water 95:5+0.05% Formic Acid Make up solvent=MeOH:Water 80:20+50 mMol Ammonium Acetate Needle rinse solvent=MeOH:Water:DMSO 80:10:10

Methods

Five methods are used depending on the analytical retention time of the compound of interest.

They all have a flow rate of 20 ml/min and a 15-minute runtime, which comprises of a 10-minute gradient followed by a 5-minute column flush and re-equilibration step.

Method 1 MDP 1.5-2.2=0-30% B Method 2 MDP 2.0-2.8=5-30% B Method 3 MDP 2.5-3.0=15-55% B Method 4 MDP 2.8-4.0=30-80% B Method 5 MDP 3.8-5.5=50-90% B Reference Example 1 2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid benzylamide

(a). To a solution of benzyl 2-chloro-4-trifluoromethylpyrimidine-5-carboxylate (0.50 g, ex Maybridge) in 1,4-dioxan (5 ml) was added 3-chloroaniline (0.85 ml) and the solution stirred at room temperature for 15 h. 1,4-Dioxan was removed under reduced pressure and ethyl acetate (15 ml) added. The solution was washed sequentially with 2N hydrochloric acid (10 ml) and water (3×10 ml), dried (MgSO₄), evaporated and triturated with hexane to afford benzyl 2-(3-chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylate (524 mg).

NMR (DMSO-d6) δ 5.35 (2H, s), 7.14 (1H, d), 7.35-7.45 (6H, m), 7.68 (1H, m), 7.98 (1H, s), 9.13 (1H, s), 10.95 (1H, s).

LC/MS, t=3.70 min, [MH⁺] 408 and 410.

(b). To a solution of benzyl 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylate (0.50 g) in ethanol (15 ml) was added a solution of potassium hydroxide (205 mg) in ethanol (10 ml) and the solution stirred at reflux for 15 h. Ethanol was removed under reduced pressure and water (15 ml) added. The solution was washed with ether and concentrated hydrochloric acid added to adjust the acidity to pH 1. The precipitated solid was filtered, washed with water and dried in vacuo at 50° C. to afford 2-(3-chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (366 mg).

NMR (DMSO-d6) δ 7.49 (1H, d), 7.71 (1H, t), 7.98 (1H, d), 8.33 (1H, s), 9.42 (1H, s), 11.15 (1H, s), 14.0 (1H, br s).

LC/MS, t=3.44 min, [MH⁺] 318 and 320.

(c). To a solution of 2-(3-chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (35 mg) in dimethylformamide (2 ml) was added successively N-ethylmorpholine (42 μl), benzylamine (15 μl), 1-hydroxybenzotriazole hydrate (23 mg) and 1-(3-dimethylamino-propyl)-3-ethylcarbodiimide hydrochloride (25 mg). The solution was stirred for 3 h and allowed to stand overnight. Dimethylformamide was removed under reduced pressure and ethyl acetate (5 ml) added. The solution was washed sequentially with 5% sodium bicarbonate solution (2.5 ml), water (2.5 ml), 5% citric acid solution (2.5 ml) and brine (2×2.5 ml), dried (MgSO₄) and evaporated to afford the title compound (45 mg).

NMR (DMSO-d6) δ 4.47 (2H, d), 7.10 (1H, d), 7.25 (1H, m), 7.36 (5H, m), 7.69 (1H, d), 7.98 (1H, s), 8.89 (1H, s), 9.12 (1H, t), 10.65 (1H, s).

LC/MS, t=3.23 min, [MH⁺] 407 and 409.

Example 1 1-[2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-piperidin-1-ylmethanone

In a manner similar to Reference Example 1(c) 2-(3-chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (35 mg) and piperidine (13 μl) afforded the title compound (38 mg).

NMR (DMSO-d6) δ 1.3-1.65 (6H, m), 3.28 (2H, s), 3.6 (2H, br s), 7.10 (1H, d), 7.37 (1H, t), 7.68 (1H, d), 7.96 (1H, s), 8.78 (1H, s), 10.55 (1H, s).

LC/MS, t=3.63 min, [MH⁺] 385 and 387.

Example 2 2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (100 mg) and cyclopentylmethylamine hydrochloride (63 mg, prepared as described in Kelley et al., J. Med. Chem., 40, 3207, (1997)) afforded the title compound (80 mg).

NMR (DMSO-d6) δ 1.20-1.26 (2H, m), 1.48-1.67 (4H, m), 1.67-1.73 (2H, m), 2.06-2.10 (1H, quintuplet), 3.15-3.18 (2H, t), 7.09 (1H, dt), 7.37 (1H, q), 7.67 (1H, d), 7.96 (1H, d), 8.60-8.63 (1H, t), 8.79 (1H, s), 10.60 (1H, s).

LC/MS, t=3.73 min, [MH⁺] 399.

Example 3 1-[2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone

In a manner similar to Reference Example 1(c) 2-(3-chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (35 mg) and morpholine (11.5 μl) afforded the title compound (43 mg).

NMR (DMSO-d6) δ 3.4-3.75 (8H, m), 7.10 (1H, d), 7.38 (1H, t), 7.68 (1H, d), 7.98 (1H, s), 8.80 (1H, s), 10.60 (1H, s).

LC/MS, t=3.29 min, [MH⁺] 387 and 389.

Example 4 2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclohexylmethylamide

In a manner similar to Reference Example 1(c) 2-(3-chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (35 mg) and cyclohexanemethylamine (15 mg) afforded the title compound (27 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.3 (3H, m), 1.5 (1H, m), 1.55-1.8 (5H, m), 3.06 (2H, t), 7.09 (1H, d), 7.37 (1H, t), 7.68 (1H, d), 7.97 (1H, s), 8.58 (1H, t), 8.79 (1H, s), 10.6 (1H, s).

LC/MS, t=3.87 min, [MH⁺] 413 and 415.

Example 5 2-Phenylamino-4-trifluoromethylpyrimidine-5-carboxylic acid cyclohexyl-methyl-amide

In a manner similar to Reference Example 1(c) 2-phenylamino-4-trifluoromethylpyrimidine-5-carboxylic acid (32 mg) and cyclohexanemethylamine (15 mg) afforded the title compound (33 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.05-1.3 (3H, m), 1.5 (1H, m), 1.55-1.8 (5H, m), 3.08 (2H, t), 7.06 (1H, d), 7.35 (2H, t), 7.76 (2H, d), 8.56 (1H, t), 8.74 (1H, s), 10.4 (1H, s).

LC/MS, t=3.66 min, [MH⁺] 379.

Example 6 1-[2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone

In a manner similar to Reference Example 1(c) 2-(2,3-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (24 mg) and morpholine (10 μl) afforded the title compound (17 mg).

NMR (DMSO-d6) δ 3.4-3.8 (8H, m), 7.40 (1H, t), 7.54 (1H, d), 7.60 (1H, d), 8.78 (1H, s), 10.15 (1H, s).

LC/MS, t=3.32 min, [MH⁺] 421 and 423.

Example 7 1-[2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone

In a manner similar to Reference Example 1(c) 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and morpholine (10 μl) afforded the title compound (31 mg).

NMR (DMSO-d6) δ 3.3-3.8 (8H, m), 7.52 (1H, d of d), 7.68 (1H, d), 7.76 (1H, d), 8.73 (1H, s), 10.05 (1H, s).

LC/MS, t=3.37 min, [MH⁺] 421 and 423.

Example 8 1-[2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone

In a manner similar to Reference Example 1(c) 2-(3,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and morpholine (10 μl) afforded the title compound (36 mg).

NMR (DMSO-d6) δ 3.35-3.8 (8H, m), 7.67 (1H, d), 7.76 (1H, d of d), 8.22 (1H, s), 8.90 (1H, s), 10.80 (1H, s).

LC/MS, t=3.45 min, [MH⁺] 421 and 423.

Example 9 1-[2-(2,5-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone

In a manner similar to Reference Example 1(c) 2-(2,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and morpholine (14.5 μl) afforded the title compound (27 mg).

NMR (DMSO-d6) δ 3.4-3.75 (8H, m), 7.32 (1H, d of d), 7.66 (1H, d), 7.78 (1H, d), 8.71 (1H, s), 10.05 (1H, s).

LC/MS, t=3.31 min, [MH⁺] 421 and 423.

Example 10 1-[2-(3-Fluorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone

In a manner similar to Reference Example 1(c) 2-(3-fluorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (35 mg) and morpholine (12 μl) afforded the title compound (31 mg).

NMR (DMSO-d6) δ 3.4-3.8 (8H, m), 6.85 (1H, t of d), 7.37 (1H, q), 7.52 (1H, d), 7.77 (1H, d of t), 8.80 (1H, s), 10.65 (1H, s).

LC/MS, t=3.06 min, [MH⁺] 371.

Example 11 1-[2-(3-Bromophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone

In a manner similar to Reference Example 1(c) 2-(3-bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (35 mg) and morpholine (10 μl) afforded the title compound (31 mg).

NMR (DMSO-d6) δ 3.4-3.8 (8H, m), 7.22 (1H, d), 7.30 (1H, t), 7.71 (1H, d), 8.11 (1H, s), 8.81 (1H, s), 10.60 (1H, s).

LC/MS, t=3.25 min, [MH⁺] 431 and 433.

Example 12 1-[2-(3-Bromophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-piperidin-4-ylmethanone

In a manner similar to Reference Example 1(c) 2-(3-bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (35 mg) and piperidine (12 μl) afforded the title compound (31 mg).

NMR (DMSO-d6) δ 1.3-1.7 (6H, m), 3.26 (2H, s), 3.60 (2H, br s), 7.21 (1H, d), 7.30 (1H, t), 7.70 (1H, d), 8.11 (1H, s), 8.78 (1H, s), 10.55 (1H, s).

LC/MS, t=3.57 min, [MH⁺] 429 and 431.

Example 13 1-[2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-morpholin-4-yl-methanone

In a manner similar to Reference Example 1(c) 2-(3,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and morpholine (14.5 μl) afforded the title compound (42 mg).

NMR (DMSO-d6) δ 3.4-3.75 (8H, m), 7.35 (1H, s), 7.89 (2H, s), 8.87 (1H, s), 10.80 (1H, s).

LC/MS, t=3.52 min, [MH⁺] 421 and 423.

Example 14 2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylamide

In a manner similar to Reference Example 1(c) 2-(3-chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (35 mg) and cyclopentylamine (13 μl) afforded the title compound (34 mg).

NMR (DMSO-d6) δ 1.5 (4H, m), 1.65 (2H, m), 1.85 (2H, m), 4.15 (1H, m), 7.09 (1H, d), 7.36 (1H, t), 7.67 (1H, d), 7.97 (1H, s), 8.55 (1H, d), 8.79 (1H, s), 10.60 (1H, s).

LC/MS, t=3.55 min, [MH⁺] 385 and 387.

Example 15 2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(2,3-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and cyclohexanemethylamine (16 μl) afforded the title compound (30 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.3 (3H, m), 1.45 (1H, m), 1.55-1.8 (5H, m), 3.05 (2H, t), 7.40 (1H, t), 7.55 (2H, d), 8.53 (1H, t), 8.65 (1H, s), 10.15 (1H, s).

LC/MS, t=3.84 min, [MH⁺] 447 and 449.

Example 16 2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and cyclohexanemethylamine (16 μl) afforded the title compound (14 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.3 (3H, m), 1.45 (1H, m), 1.55-1.75 (5H, m), 3.05 (2H, t), 7.46 (1H, d), 7.57 (1H, d), 7.72 (1H, s), 8.53 (1H, t), 8.64 (1H, s), 10.00 (1H, s).

LC/MS, t=3.90 min, [MH⁺] 447 and 449.

Example 17 2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and cyclohexanemethylamine (16 μl) afforded the title compound (31 mg).

NMR (DMSO-d6) δ 0.8-1.0 (2H, m), 1.1-1.3 (3H, m), 1.5 (1H, m), 1.55-1.8 (5H, m), 3.06 (2H, t), 7.62 (1H, d), 7.69 (1H, d), 8.18 (1H, s), 8.59 (1H, t), 8.82 (1H, s), 10.70 (1H, s).

LC/MS, t=4.01 min, [MH⁺] 447 and 449.

Example 18 2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and cyclohexanemethylamine (16 μl) afforded the title compound (30 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.3 (3H, m), 1.5 (1H, m), 1.55-1.8 (5H, m), 3.07 (2H, t), 7.26 (1H, s), 7.89 (2H, s), 8.58 (1H, t), 8.86 (1H, s), 10.80 (1H, s).

LC/MS, t=4.08 min, [MH⁺] 447 and 449.

Example 19 2-(3-Fluorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and cyclohexanemethylamine (18 μl) afforded the title compound (38 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.3 (3H, m), 1.5 (1H, m), 1.55-1.8 (5H, m), 3.09 (2H, t), 6.87 (1H, t of d), 7.39 (1H, q), 7.53 (1H, d), 7.78 (1H, d of t), 8.59 (1H, t), 8.80 (1H, s), 10.60 (1H, s).

LC/MS, t=3.68 min, [MH⁺] 397.

Example 20 2-(3-Bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3-bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and cyclohexanemethylamine (15 μl) afforded the title compound (36 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.3 (3H, m), 1.5 (1H, m), 1.55-1.8 (5H, m), 3.08 (2H, t), 7.23 (1H, d), 7.31 (1H, t), 7.71 (1H, d), 8.10 (1H, s), 8.57 (1H, t), 8.80 (1H, s), 10.60 (1H, s).

LC/MS, t=3.85 min, [MH⁺] 457 and 459.

Example 21 2-(2,6-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(2,6-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (33 mg) and cyclohexanemethylamine (15 μl) afforded the title compound (9 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.05-1.25 (3H, m), 1.46 (1H, m), 1.55-1.8 (5H, m), 3.04 (2H, t), 7.39 (1H, t), 7.59 (2H, d), 8.56 (2H, m), 10.10 (1H, s).

LC/MS, t=3.84 min, [MH⁺] 447 and 449.

Example 22 2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid

(tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and 4-aminomethyltetrahydropyran (13 mg) afforded the title compound (25 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.62 (2H, d), 1.74 (1H, m), 3.13 (2H, t), 3.27 (2H, t), 3.86 (2H, d), 7.10 (1H, d), 7.37 (1H, t), 7.66 (1H, d), 7.97 (1H, s), 8.63 (1H, t), 8.82 (1H, s), 10.60 (1H, s).

LC/MS, t=3.22 min, [MH⁺] 415 and 417.

Example 23 2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclobutyl-amide

In a manner similar to Reference Example 1(c) 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and cyclobutylamine (10 μl) afforded the title compound (28 mg).

NMR (DMSO-d6) δ 1.6-1.75 (2H, m), 1.9-2.05 (2H, m), 2.2-2.3 (2H, m), 4.32 (1H, m), 7.10 (1H, d), 7.37 (1H, t), 7.67 (1H, d), 7.96 (1H, s), 8.82 (2H, s), 10.60 (1H, s).

LC/MS, t=3.45 min, [MH⁺] 371 and 373.

Examples 24 to 30

Table 1) gives examples 24 to 30, column 1 gives the precursors that were reacted with methyl 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylate in a manner similar to that in Reference example 1(a). In a manner similar to that in Reference example 1(b), the carboxylic acid of the resultant ester was prepared. Finally, in a manner similar to that of Reference example 1(c), the resultant acid product was reacted with the precursor of column 2 to provide the final product of column 3.

TABLE 1 LC/MS 1 Retention time (min) 2 MH⁺ Ex 1 2 3-Product Structure 3 Formula 24 Aniline Piper- idine 1-(2-Phenylamino-4-trifluoromethyl- pyrimidin-5-yl)-1-piperidin-1-yl- methanone

3.38 351 C₁₇H₁₇F₃N₄O 25 Aniline Mor- pholine 1-Morpholin-4-yl-1-(2-phenylamino- 4-trifluoromethyl-pyrimidin-5-yl)- methanone

3.04 353 C₁₆H₁₅F₃N₄O₂ 26 3- Chloro- aniline Amino- aceton- itrile 2-(3-Chloro-phenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyanomethyl-amide

3.27 356 C₁₄H₉ ³⁵Cl F₃N₅O 27 3- Chloro- aniline 3,3-Di- methyl- butyl amine 2-(3-Chloro-phenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (3,3-dimethyl-butyl)- amide

3.80 401 C₁₈H₂₀ ³⁵Cl F₃N₄O 28 3- Chloro- aniline Neo- pentyl- amine 2-(3-Chloro-phenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (2,2-dimethyl- propyl)-amide

3.69 387 C₁₇H₁₈ ³⁵Cl F₃N₄O 29 3- Fluoro- aniline Cyclo- butyl- amine 2-(3-Fluoro-phenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclobutylamide

3.29 355 C₁₆H₁₄F₄N₄O 30 3,4- Dichloro- aniline Cyclo- butyl- amine 2-(3,4-Dichloro-phenylamino)-4- trifluoromethyl-pyrimidin-5- carboxylic acid cyclobutylamide

3.66 405 C₁₆H₁₃ ³⁵Cl₂ F₃N₄O

Example 31 2-(3-Fluorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)amide

In a manner similar to Reference Example 1(c) 2-(3-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and 4-aminomethyltetrahydropyran (16 mg) afforded the title compound (38 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.63 (2H, d), 1.75 (1H, m), 3.15 (2H, t), 3.29 (2H, t), 3.86 (2H, d), 6.88 (1H, td), 7.38 (1H, q), 7.51 (1H, d), 7.76 (1H, dt), 8.64 (1H, t), 8.82 (1H, s), 10.60 (1H, s).

LC/MS, t=3.08 min, [MH⁺] 399.

Example 32 2-(3-Bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)amide

In a manner similar to Reference Example 1(c) 2-(3-bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and 4-aminomethyltetrahydropyran (13 5 mg) afforded the title compound (36 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.62 (2H, d), 1.74 (1H, m), 3.13 (2H, t), 3.27 (2H, t), 3.86 (2H, d), 7.23 (1H, d), 7.31 (1H, t), 7.71 (1H, d), 8.11 (1H, s), 8.63 (1H, t), 8.82 (1H, s), 10.60 (1H, s).

LC/MS, t=3.26 min, [MH⁺] 459 and 461.

Example 33 2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)amide

In a manner similar to Reference Example 1(c) 2-(2,3-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and 4-aminomethyltetrahydropyran (12 mg) afforded the title compound (25 mg).

NMR (DMSO-d6) δ 1.1-1.25 (2H, m), 1.60 (2H, d), 1.72 (1H, m), 3.11 (2H, t), 3.26 (2H, t), 3.85 (2H, d), 7.40 (1H, t), 7.55 (2H, d), 8.60 (1H, t), 8.66 (1H, s), 10.10 (1H, s).

LC/MS, t=3.29 min, [MH⁺] 449 and 451.

Example 34 2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and 4-aminomethyltetrahydropyran (12 mg) afforded the title compound (34 mg).

NMR (DMSO-d6) δ 1.1-1.25 (2H, m), 1.59 (2H, d), 1.72 (1H, m), 3.11 (2H, t), 3.26 (2H, t), 3.85 (2H, d), 7.47 (1H, dd), 7.57 (1H, d), 7.72 (1H, s), 8.60 (1H, t), 8.65 (1H, s), 10.05 (1H, s).

LC/MS, t=3.33 min, [MH⁺] 449 and 451.

Additional Synthesis of Example 34 2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

(a). To a solution of methyl 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylate (0.50 g, ex Maybridge) in 1,4-dioxan (5 ml) was added 2,4-dichloroaniline (1.7 g) and the solution stirred under reflux for 7 h. 1,4-Dioxan was removed under reduced pressure and ethyl acetate (15 ml) added. The solution was washed sequentially with 2N hydrochloric acid (10 ml) and water (3×10 ml), dried (MgSO₄), evaporated and triturated with hexane to afford methyl 2-(2,4-dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylate (358 mg).

NMR (CDCl₃) δ 3.95 (3H, s), 7.30 (1H, dd), 7.45 (1H, d), 8.00 (1H, s), 8.5 (1H, d), 9.05 (1H, s).

LC/MS, t=3.74 min, [MH⁺] 366.

(b). To a solution of methyl 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylate (0.358 g) in ethanol (8 ml) was added a solution of potassium hydroxide (190 mg) in ethanol (8 ml) and the solution stirred at reflux for 24 h. Ethanol was removed under reduced pressure and water (15 ml) added. The solution was washed with ether and concentrated hydrochloric acid was added to adjust the acidity to pH 1. The precipitated solid was filtered, washed with water and dried in vacuo at 50° C. to afford 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (262 mg).

NMR (DMSO-d6) δ 7.48 (1H, dd), 7.60 (1H, d), 7.73 (1H, d), 8.95 (1H, s), 10.3 (1H, s), 13.6 (1H, s).

(c). To a solution of 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) in dimethylformamide (2 ml) was added successively N-ethylmorpholine (33 μl), 4-aminomethyltetrahydropyran (12 mg), 1-hydroxybenzotriazole hydrate (18 mg) and 1-(3-dimethylamino-propyl)-3-ethylcarbodiimide hydrochloride (20 mg). The solution was stirred for 3 h and allowed to stand overnight. Dimethylformamide was removed under reduced pressure and ethyl acetate (5 ml) added. The solution was washed sequentially with 5% sodium bicarbonate solution (2.5 ml), water (2.5 ml), 5% citric acid solution (2.5 ml) and brine (2×2.5 ml), dried (MgSO₄) and evaporated to afford the title compound (34 mg) NMR (DMSO-d6) δ 1.20 (2H, m), 1.58 (2H, d), 1.70 (1H, m), 3.10 (2H, t), 3.23 (2H, t), 3.84 (2H, dd), 7.46 (1H, dd), 7.57 (1H, d), 7.71 (1H, d), 8.59 (1H, t), 8.63 (1H, s), 10.00 (1H, s).

LC/MS, t=3.33 min, [MH⁺] 449.

Additional Synthesis of Example 34 2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

(a). To a solution of methyl 2-chloro-4-trifluoromethylpyrimidine-5-carboxylate (70 g, ex Maybridge 22 g, ex Fluorochem 48 g) in 1,4-dioxan (100 ml) was added 2,4-dichloroaniline (142 g) and the solution stirred under reflux for 10.5 h. 1,4-Dioxan was partially removed (approx 50 ml) under reduced pressure and 2N HCl (800 ml) added. The mixture was stirred with overhead stirring for 3 h and the resulting solid filtered onto a sinter. The solid was washed with 2N HCl (2×300 ml) and water (4×400 ml) then dried over sodium hydroxide in vacuo at 50° C. to afford methyl 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylate. The solid contained approximately 5% 2,4-dichloroaniline.

NMR (DMSO-d6) δ 3.84 (3H, s), 7.47 (1H, dd), 7.49 (1H, d), 7.74 (1H, d), 8.96 (1H, s), 10.45 (1H, s).

LC/MS, t=3.66 min, [MH⁺] 366.

(b). To a solution of methyl 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylate (107 g) in methanol (700 ml) was added a solution of potassium hydroxide (50 g) in methanol (700 ml) and the solution stirred at reflux for 24 h. Methanol was removed under reduced pressure and water (800 ml) added. The solution was washed with ether (3×400 ml, which removed the remaining 2,4-dichloroaniline) and concentrated hydrochloric acid added to adjust the acidity to pH 1. The precipitated solid was filtered, washed with 2N HCl and water until the pH of the filtrate was neutral. The solid was dried in vacuo at 50° C. to afford 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (86.9 g)

NMR (DMSO-d6) δ 7.48 (1H, dd), 7.60 (1H, d), 7.73 (1H, d), 8.95 (1H, s), 10.3 (1H, s), 13.6 (1H, s).

LC/MS, t=4.35 min, [MH⁺] 352

(c). To a solution of 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (86 g) in dimethylformamide (800 ml) was added successively N-ethylmorpholine (93 ml), 4-aminomethyltetrahydropyran (29.5 g), 1-hydroxybenzotriazole hydrate (51.5 g) and 1-(3-dimethylamino-propyl)-3-ethylcarbodiimide hydrochloride (56.2 g). The solution was stirred for 24 h. Dimethylformamide was partially removed (approx 650 ml) under reduced pressure and 5% sodium bicarbonate solution added (3×500 ml, added portionwise to control the release of carbon dioxide). The mixture was stirred with overhead stirring for 3 h and the resulting solid filtered onto a sinter. The solid was washed with 5% sodium bicarbonate (4×400 ml) and water (3×400 ml) then dried over sodium hydroxide in vacuo at 50° C. to afford the title compound (109.1 g)

NMR (DMSO-d6) δ 1.20 (2H, m), 1.58 (2H, d), 1.70 (1H, m), 3.10 (2H, t), 3.23 (2H, t), 3.84 (2H, dd), 7.46 (1H, dd), 7.57 (1H, d), 7.71 (1H, d), 8.59 (1H, t), 8.63 (1H, s), 10.00 (1H, s).

LC/MS, t=3.41 min, [MH⁺] 449.

Example 35 2-(2,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(2,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (50 mg) and 4-aminomethyltetrahydropyran (25 mg) afforded the title compound (63 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.60 (2H, d), 1.72 (1H, m), 3.12 (2H, t), 3.27 (2H, t), 3.85 (2H, d), 7.35 (1H, dd), 7.59 (1H, d), 7.73 (1H, s), 8.62 (1H, t), 8.70 (1H, s), 10.05 (1H, s).

LC/MS, t=3.30 min, [MH⁺] 449 and 451.

Example 36 2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(3,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (50 mg) and 4-aminomethyltetrahydropyran (25 mg) afforded the title compound (68 mg).

NMR (DMSO-d6) δ 1.15-1.35 (2H, m), 1.62 (2H, d), 1.72 (1H, m), 3.14 (2H, t), 3.28 (2H, t), 3.86 (2H, d), 7.25 (1H, s), 7.88 (2H, s), 8.66 (1H, t), 8.88 (1H, s), 10.75 (1H, s).

Example 37 2-(3-Methoxyphenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(3-methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and 4-aminomethyltetrahydropyran (14.5 mg) afforded the title compound (29 mg).

NMR (DMSO-d6) δ 1.1-1.25 (2H, m), 1.61 (2H, d), 1.74 (1H, m), 3.13 (2H, t), 3.27 (2H, t), 3.74 (3H, s), 3.86 (2H, d), 6.63 (1H, d), 7.25 (2H, m), 7.53 (1H, s), 8.62 (1H, t), 8.76 (1H, s), 10.35 (1H, s).

LC/MS, t=2.97 min, [MH⁺] 411.

Example 38 2-(3-Fluorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and cyclopentylmethylamine hydrochloride (17 mg, prepared as described in Kelley et al., J. Med. Chem., 40, 3207, (1997)) afforded the title compound (17 mg).

NMR (DMSO-d6) δ 1.20-1.30 (2H, m), 1.45-1.68 (4H, m), 1.68-1.77 (2H, m), 2.1 (1H, quintuplet), 3.19 (2H, t), 6.89 (1H, dt), 7.40 (1H, q), 7.54 (1H, d), 7.78 (1H, d), 8.64 (1H, t), 8.80 (1H, s), 10.70 (1H, s).

LC/MS, t=3.53 min, [MH⁺] 383.

Example 39 2-(3-Bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3-bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (36.5 mg) and cyclopentylmethylamine hydrochloride (17 mg) afforded the title compound (28 mg).

NMR (DMSO-d6) δ 1.39-1.52 (2H, m), 1.69-1.90 (4H, m), 1.90-2.02 (2H, m), 2.34 (1H, quintuplet), 3.4 (2H, t), 7.48 (1H, d), 7.57 (1H, t), 7.95 (1H, d), 8.37 (1H, s). 8.86 (1H, t), 9.02 (1H, s), 10.80 (1H, s).

LC/MS, t=3.33 min, [MH⁺] 443 and 445.

Example 40 2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(2,3-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and cyclopentylmethylamine hydrochloride (15 mg) afforded the title compound (30 mg).

NMR (DMSO-d6) δ 1.15-1.30 (2H, m), 1.44-1.78 (6H, m), 2.10 (1H, quintuplet), 3.16 (2H, t), 7.41 (2H, t), 7.54 (1H, m), 8.58 (1H, brt), 8.78 (1H, s), 10.10 (1H, s).

LC/MS, t=3.71 min, [MH⁺] 433 and 435.

Example 41 2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and cyclopentylmethylamine hydrochloride (15 mg) afforded the title compound (27 mg).

NMR (DMSO-d6) δ 1.2-1.3 (2H, m), 1.4-1.79 (6H, m), 2.10 (1H, quintuplet), 3.17 (2H, t), 7.50 (1H, d), 7.60 (1H, d), 7.75 (1H, d), 8.68 (1H, t), 8.78 (1H, s), 10.10 (1H, s).

LC/MS, t=3.76 min, [MH⁺] 433 and 435.

Example 42 2-(2,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(2,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and cyclopentylmethylamine hydrochloride (15 mg) afforded the title compound (23 mg).

NMR (DMSO-d6) δ 1.15-1.30 (2H, m), 1.45-1.79 (6H, m), 2.08 (1H, quintuplet), 3.18 (2H, t), 7.38 (1H, d), 7.62 (1H, d), 7.75 (1H, s), 8.61 (1H, br t), 8.71 (1H, s), 10.05 (1H, s).

LC/MS, t=3.76 min, [MH⁺] 433 and 435.

Example 43 2-(2,6-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(2,6-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and cyclopentylmethylamine hydrochloride (15 mg) afforded the title compound (25 mg).

NMR (DMSO-d6) δ 1.15-1.30 (2H, m), 1.45-1.78 (6H, m), 2.08 (1H, quintuplet), 3.15 (2H, t), 7.4 (1H, t), 7.6-7.68 (2H, m), 8.5-8.7 (2H, m), 10.20 (1H, s).

LC/MS, t=3.49 min, [MH⁺] 433 and 435.

Example 44 2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and cyclopentylmethylamine hydrochloride (15 mg) afforded the title compound (29 mg).

NMR (DMSO-d6) δ 1.12-1.3 (2H, m), 1.44-1.8 (6H, m), 2.1 (1H, quintuplet). 3.17 (2H, t), 7.62 (1H, br d), 7.72 (1H, d), 8.18 (1H, d), 8.60-8.69 (1H, br t), 8.83 (1H, s), 10.80 (1H, s).

LC/MS, t=3.87 min, [MH⁺] 433 and 435.

Example 45 2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and cyclopentylmethylamine hydrochloride (15 mg) afforded the title compound (27 mg).

NMR (DMSO-d6) 1.14-1.34 (2H, m), 1.45-1.8 (6H, m), 2.10 (1H, quintuplet), 3.20 (2H, t), 7.28 (1H, s), 7.91 (2H, s), 8.6-8.7 (1H, br t), 8.9 (1H, s), 10.75 (1H, s).

LC/MS, t=3.94 min, [MH⁺] 433 and 435.

Example 46 2-(3-Methoxyphenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3-methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and cyclopentylmethylamine hydrochloride (17 mg) afforded the title compound (21 mg).

NMR (DMSO-d6) 1.25-1.38 (2H, m), 1.50-1.85 (6H, m), 2.15 (1H, quintuplet), 3.25 (2H, t), 3.85 (3H, s), 6.70 (1H, br d), 7.26-7.37 (2H, m), 7.60 (1H, m), 8.68 (1H, t), 8.80 (1H, s), 10.50 (1H, s).

LC/MS, t=3.46 min, [MH⁺] 395.

Example 47 2-(3-Bromophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclobutylamide

In a manner similar to Reference Example 1(c) 2-(3-bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and cyclobutylamine (10 μl) afforded the title compound (30 mg).

NMR (DMSO-d6) δ 1.70 (2H, m), 1.97 (2H, m), 2.22 (2H, m), 4.32 (1H, m), 7.22-7.33 (2H, m), 7.70 (1H, d), 8.10 (1H, s), 8.81-8.83 (2H, m), 10.60 (1H, s).

LC/MS, t=3.47 min, [MH⁺] 415 and 417.

Example 48 2-(2,3-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclobutylamide

In a manner similar to Reference Example 1(c) 2-(2,3-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (25 mg) and cyclobutylamine (10 μl) afforded the title compound (20 mg).

NMR (DMSO-d6) δ 1.70 (2H, m), 1.97 (2H, m), 2.22 (2H, m), 4.32 (1H, m), 7.38-7.56 (3H, m), 8.65 (1H, s), 8.80 (1H, d), 10.10 (1H, s).

LC/MS, t=3.48 min, [MH⁺] 405 and 407.

Example 49 2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclobutylamide

In a manner similar to Reference Example 1(c) 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and cyclobutylamine (10 μl) afforded the title compound (26 mg).

NMR (DMSO-d6) δ 1.70 (2H, m), 1.97 (2H, m), 2.22 (2H, m), 4.32 (1H, m), 7.46-7.72 (3H, m), 8.64 (1H, s), 8.80 (1H, d), 10.00 (1H, s).

LC/MS, t=3.54 min, [MH⁺] 405 and 407.

Example 50 2-(2,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclobutylamide

In a manner similar to Reference Example 1(c) 2-(2,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (50 mg) and cyclobutylamine (19 μl) afforded the title compound (56 mg).

NMR (DMSO-d6) δ 1.70 (2H, m), 1.97 (2H, m), 2.22 (2H, m), 4.30 (1H, m), 7.33-7.73 (3H, m), 8.70 (1H, s), 8.80 (1H, d), 10.00 (1H, s).

LC/MS, t=3.52 min, [MH⁺] 405 and 407.

Example 51 2-(2,6-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid N-cyclobutylamide

In a manner similar to Reference Example 1(c) 2-(2,6-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and cyclobutylamine (10 μl) afforded the title compound (34 mg).

NMR (DMSO-d6) δ 1.70 (2H, m), 1.97 (2H, m), 2.22 (2H, m), 4.30 (1H, m), 7.36-7.60 (3H, m), 8.59 (1H, s), 8.80 (1H, d), 10.15 (1H, s).

LC/MS, t=3.24 min, [MH⁺] 405 and 407.

Example 52 2-(3,5-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclobutylamide

In a manner similar to Reference Example 1(c) 2-(3,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (50 mg) and cyclobutylamine (19 μl) afforded the title compound (56 mg).

NMR (DMSO-d6) δ 1.70 (2H, m), 1.97 (2H, m), 2.22 (2H, m), 4.32 (1H, m), 7.25-7.87 (3H, m), 8.85 (1H, d), 8.88 (1H, s), 10.80 (1H, s).

LC/MS, t=3.73 min, [MH⁺] 405 and 407.

Example 53 2-(3-Methoxyphenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclobutylamide

In a manner similar to Reference Example 1(c) 2-(3-methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and cyclobutylamine (10.5 μl) afforded the title compound (27 mg).

NMR (DMSO-d6) δ 1.70 (2H, m), 1.97 (2H, m), 2.22 (2H, m), 3.75 (3H, s), 4.32 (1H, m), 7.53-7.87 (4H, m), 8.76 (1H, s), 8.81 (1H, d), 10.40 (1H, s).

LC/MS, t=3.20 min, [MH⁺] 367.

Example 54 2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid cyclobutylmethyl-amide

(a) A solution of borane-tetrahydrofuran complex (1M in tetrahydrofuran, 120 ml) was added over 10 min to a solution of cyclobutane carbonitrile (8.1 g) [Lancaster] in dry tetrahydrofuran (20 ml) under nitrogen at room temperature. The solution was refluxed overnight then cooled to 20°. Methanol (150 ml) was added dropwise over 15 mins keeping the temperature below 25°, then the mixture was cooled to 0° and dry hydrogen chloride was bubbled through for 30 min. The resulting mixture was refluxed for 90 min, evaporated and the residue re-evaporated twice from methanol. Ether (150 ml) was added and the resulting solid was filtered off. It was taken up in hot isopropanol (50 ml), filtered, and hot acetonitrile (30 ml) added. The mixture was cooled and the solid filtered off to give the C-cyclobutylmethylamine hydrochloride (5.7 g)

NMR (400 MHz, DMSO-d6) F6382 1.8 (4H, m), 2.0 (2H, m), 2.54 (1H, m), 2.80 (2H, d), 8.0 (3H, br s).

(b) In a manner similar to Reference Example 1(c) 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (32 mg) and C-cyclobutylmethylamine hydrochloride (13 mg) afforded the title compound (28 mg).

NMR (DMSO-d6) δ 1.70 (2H, m), 1.82 (2H, m), 2.00 (2H, m), 2.50 (1H, m), 3.26 (2H, m), 7.08-7.95 (4H, m), 8.55 (1H, t), 8.77 (1H, s), 10.60 (1H, s).

LC/MS, t=3.56 min, [MH⁺] 385.

Example 55 2-(2,6-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(2,6-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and 4-aminomethyltetrahydropyran (20 mg, ex CombiBlocks) afforded the title compound (32 mg).

NMR (DMSO-d6) δ 1.16-1.22 (2H, m), 1.58 (2H, d), 1.70 (1H, m), 3.09 (2H, t), 3.23 (2H, m), 3.84 (2H, d), 7.38 (1H, t), 7.59 (2H, d), 8.61 (2H, m), 10.10 (1H, s)

LC/MS, t=3.02 min, Molecular ion observed (MH⁺)=449 consistent with the molecular formula C₁₈H₁₇ ³⁵Cl₂F₃N₄O₂

Example 56 2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(3,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and 4-aminomethyltetrahydropyran (20 mg, ex CombiBlocks) afforded the title compound (38 mg).

NMR (DMSO-d6) δ 1.18-1.25 (2H, m), 1.62 (2H, d), 1.74 (1H, m), 3.1 (2H, t), 3.25 (2H, m), 3.85 (2H, d), 7.60 (1H, t), 7.69 (1H, m), 8.16 (1H, dd), 8.64 (1H, t), 8.84 (1H, s), 10.70 (1H, s)

LC/MS, t=3.45 min, Molecular ion observed (MH⁺)=449 consistent with the molecular formula C₁₈H₁₇N₄O₂ ³⁵Cl₂F₃

Example 68 1-[2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidin-5-yl]-1-(morpholin-4-yl)-methanone

In a manner similar to Reference Example 1(c) 2-(3,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and morpholine (15 mg, ex Aldrich) afforded the title compound (36 mg).

NMR (DMSO-d6) 6) 3.7 (8H, s), 7.65 (1H, d), 7.75 (1H, dd), 8.2 (1H, d), 8.9 (1H, s), 10.80 (1H, s)

LC/MS, t=3.45 min, Molecular ion observed (MH⁺)=421 consistent with the molecular formula C₁₆H₁₃N₄O₂ ³⁵Cl₂F₃

Table 2:

Example 57-67 and 69-73 were prepared in a corresponding fashion to the above compounds.

TABLE 2 Mass spec details 1 Retention Time 2 MH⁺ 3 Formula Compound Name Structure consistent with MH⁺ 57 2-(3-Chloro-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid cycloheptylamide

3.78 413 C₁₉H₂₀ ³⁵ClF₃N₄O 58 2-(3-Chloro-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid [(S)-1- (tetrahydro-furan-2-y-l)methyl]- amide

3.25 401 C₁₇H₁₆ ³⁵Cl F₃N₄O₂ 59 2-(3-Fluoro-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid [(S)-1- (tetrahydro-furan-2-y-l)methyl]- amide

3.10 385 C₁₇H₁₆ F₄N₄O₂ 60 2-(3-Bromo-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid [(S)-1- (tetrahydro-furan-2-yl)methyl]- amide

3.29 447 C₁₇H₁ ⁸¹Br F₃N₄O₂ 61 2-(3-Chloro-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid (1- methanesulfonyl-piperidin-4-ylmethyl)-amide

3.22 492 C₁₉H₂₁ ³⁵Cl F₃N₅O₃S 62 2-(2,5-Dichloro-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid cyclo- hexylmethyl-amide

3.90 447 C₁₉H₁₉ ³⁵Cl₂F₃N₄O 63 2-(3-Chloro-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid (1- ethyl-propyl)-amide

3.60 387 C₁₇H₁₈ ³⁵ClF₃N₄O 64 2-(3-Chloro-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid (tert- butyl)-amide

3.55 373 C₁₆H₁₆ ³⁵ClF₃N₄O 65 2-(3-Chloro-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid (tetra- hydro-pyran-4-yl)-amide

3.18 401 C₁₇H₁₆ ³⁵Cl F₃N₄O₂ 66 2-(3-Chloro-phenylamino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid cyclo- hexyl-amide

3.67 399 C₁₈H₁₈ ³⁵ClF₃N₄O 67 1-[2-(3,5-Dichloro-phenylamino)-4-trifluoro- methyl-pyrimidin-5-yl]-1-(piperidin-1-yl)- methanone

3.84 419 C₁₇H₁₅ ³⁵Cl₂F₃N₄O 69 2-Phenylamino-4-trifluoromethyl- pyrimidine-5- carboxylic acid (2,2-di- methyl-propyl)-amide

3.48 353 C₁₇H₁₉F₃N₄O 70 2-Phenylamino-4-trifluoromethyl- pyrimidine-5-carboxylic acid (3,3- dimethyl-butyl)-amide

3.60 367 C₁₈H₂₁F₃N₄O 71 2-(3-Chloro-phenylamino)-4-tri- fluoromethyl-pyrimidine-5-carboxylic acid (piperidin-4-ylmethyl)-amide trifluoro- acetate

2.46 414 C₁₈H₁₉ ³⁵Cl F₃N₅O 72 1-[2-(3-Chloro-phenylamino)-4- trifluoromethyl-pyrimidin-5-yl]-1-(piperazin- 1-yl)-methanone

2.42 386 C₁₆H₁₅ ³⁵Cl F₃N₅O 73 2-(3-Fluoro-phenylamino)-4-tri- fluoromethyl-pyrimidine-5-carboxylic acid [(R)-1-(tetrahydro-furan- 2-yl)methyl]-amide

3.10 385 C₁₇H₁₆ F₄N₄O₂

Table 3

Compounds 74 to 87 were prepared according to the conditions described for table 1, and purified by the method given in column P as follows:

Method A: refers to the procedure in part (b) of Example 166. Method B: Mass-directed autopurification using the procedures detailed at the beginning of the experimental Method C: Purification using Biotage Chromatography over Merck 9385 Silica Gel (25 g) eluting with 1-2% methanol in dichloromethane.

Intermediate A: 4-Aminomethyltetrahydropyran-4-ol hydrochloride

To a solution of 1.0M lithium aluminium hydride in tetrahydrofuran (20 ml) was added under a nitrogen atmosphere a solution of 4-hydroxytetra-hydropyran-4-carbonitrile (0.50 g, prepared as described in Eiden et al., Arch. Pharm., 320, 348, (1987)) in tetrahydrofuran (2 ml) and the solution stirred at reflux for 6 hours. Water (1 ml) and 2N sodium hydroxide solution (1 ml) were added cautiously and the resultant solid filtered and washed with ether. The filtrate was dried (MgSO₄), evaporated and the residue dissolved in ethanol (3 ml) and concentrated hydrochloric acid (0.5 ml) added. Solvent was removed under reduced pressure and the resultant solid washed with ether and dried in vacuo at 40° C. to afford the title compound (234 mg).

NMR (DMSO-d6) 1.45-1.6 (4H, m), 2.78 (2H, q), 3.61 (4H, m), 5.07 (1H, br s), 7.89 (3H, br s).

LC/MS 1 Retention time (min) 2 MH⁺ Ex 1 2 3-Product P 3 Formula 74 3,4- Dichloroaniline (Lancaster) Cyclopentylamine (Aldrich) 3,4-Dichlorophenylamino-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopentylamide

A 3.53 419 C₁₇H₁₅ ³⁵Cl₂F₃N₄O 75 3,5- Dichloroaniline (Lancaster) Cyclopentylamine (Aldrich) 3,5-Dichlorophenylamino-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopentylamide

A 3.60 419 C₁₇H₁₅ ³⁵Cl₂F₃N₄O 76 3- Methoxyaniline (Lancaster) Cyclopentylamine (Aldrich) 3-Methoxyphenylamino-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopentylamide

A 3.08 381 C₁₈H₁₉F₃N₄O₂ 77 2,3- Dichloroaniline (Lancaster) Cyclopentylamine (Aldrich) 2,3-Dichlorophenylamino-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopentylamide

A 3.60 419 C₁₇H₁₅ ³⁵Cl₂F₃N₄O 78 3-fluoroaniline (Lancaster) Piperidine (Aldrich) 1-[2-(3-fluorophenylamino)-4- trifluoromethyl-pyrimidin-5-yl]-1- piperidin-1-yl-methanone

A 3.39 369 C₁₇H₁₆N₄F₄O 79 3-chloroaniline (Lancaster) 1-methanesulfonyl- piperazine (U.S. 5081147) 1-[2-(3-chlorophenylamino)-4- trifluoromethyl-pyrimidin-5-yl]-1-(4- methanesulfonyl-piperazin-1-yl)- methanone

A 3.21 464 C₁₇H₁₇Cl³⁵F₃N₅O₃S 80 3- bromoaniline (Lancaster) R-1- (tetrahydrofuran-2- yl)methylamine (Lancaster) 2-(3-bromophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid [R-1- (tetrahydrofuran-2-yl)methyl]-amide

A 3.29 447 C₁₇H₁₆ ⁸¹BrF₃N₄O₂ 81 2,3- dichloroaniline tetrahydro- thiopyran-4-ylamine JOC 46(22), 4376-83 1981 2-(2,3-Diclorophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (tetrahydro- thiopyran-4-yl)-amide

C 3.74 451 C₁₇H₁₅ ³⁵Cl₂F₃N₄OS 82 2,3- dichloroaniline (1,1-dioxo- tetrahydro-2H- thiopyran-4-yl)amine hydrochloride WO 0218380 2-(2,3-Dichlorophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (1,1-dioxo- tetrahydro-2H-thiopyran-4-yl)-amide

C 3.29 483 C₁₇H₁₅ ³⁵Cl₂F₃N₄O₃S 83 3-fluoroaniline (Lancaster) cyclopropylmethylamine (Lancaster) 2-(3-Fluoro-phenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopropylmethyl- amide

A 3.32 355 C₁₆H₁₄F₄N₄O 84 3- chloroaniline (Lancaster) cyclopropylmethylamine (Lancaster) 2-(3-Chloro-phenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopropylmethyl- amide

B 3.46 371 C₁₆H₁₄ ³⁵ClF₃N₄O 85 2,5-Dichloro- aniline (ex (Lancaster) Morpholine (ex Aldrich) 1-[2-(2,5-Dichloro-phenylamino)-4- tri-fluoromethyl-pyrimidin-5-yl]-1- piperidin-1-yl-methanone

A 3.64 419 C₁₇H₁₅ ³⁵Cl₂F₃N₄O 86 3-Fluoro- aniline (ex Lancaster) 1-Aminomethyl-1- cyclohexanol hydrochloride (ex Aldrich) 2-(3-Fluorophenyl-amino)-4-trifluoro- methyl-pyrimidine-5-carboxylic acid (1-hydroxy-cyclohexyl-methyl)- amide

A 3.25 411 C₁₉H₂₀F₄N₄O₂ 87 3-Bromo- aniline (ex Lancaster) 4-Aminomethyl- tetrahydro-4H- pyran-4-ol hydrochloride (Intermediate A) 2-(3-Bromophenyl-amino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (4- hydroxytetrahydropyran-4- ylmethyl)amide

A 3.05 473 C₁₈H₁₈ ⁷⁹BrF₃N₄O₃

Table 4

In the following table 4, column 2 gives precursors R²NH₂ that were reacted with 2-chloro-4-(trifluoromethyl)pyrimidine-5-carbonyl chloride in a manner similar to that in part (a) of Example 166. The resultant product was reacted with the precursor YNH₂ of column 3 in a manner similar to that in part (b) of Example 166, to provide the final product in column 4.

Preparation Method A: refers to the procedure give in part (b) of Example 166. Preparation Method B: This is exemplified by the by Example 109, 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-ylmethyl)amide (50 mg) and 2-chloro-2-cyanoaniline (118 mg) were irradiated in a microwave apparatus (the model used was the ‘Creator’, supplied by ‘Personal Chemistry’, operating at 300 Watts), at 190° C. for 30 min. For examples using this method, the equivalents of substituted aniline YNH₂ used, and duration of irradiation follow in brackets after the method B.

The column entitled “Prep” refers to the preparation method used.

The product was then purified according to on of the following methods described below.

The column entitled “Pure” refers to the purification method used

Purification method A: refers to the procedure give in part (b) of Example 166 Purification method B: mass directed autopurification using the procedures detailed at the beginning of the experimental. Purification method C: The reaction was worked up as for part (b) of Example 166, and the crude product further purified by Biotage chromatography over Merck 9385 silica gel, eluting with isohexane/ethyl acetate.

TABLE 4 LCMS 1 Retention time 2 MH⁺ 3 Formula consistent with NR²H₂ YNH₂ Compound Prep Pure Structure MH⁺ 88 Cyclohexanemethanamine (Aldrich) 3,5-Bis- trifluoromethyl- phenylamine (Aldrich) 2-(3,5-Bis-trifluoromethyl- phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid cyclohexylmethyl-amide A B

4.09 515 C₂₁H₁₉F₉N₄O 89 Cyclohexanemethanamine 5-Amino- isophthalonitrile 2-(3,5-Dicyano-phenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclohexylmethyl-amide A B

3.59 429 C₂₁H₁₉F₃N₆O 90 Cyclohexanemethanamine 3-Fluoro-5- trifluoromethyl- phenylamine (Supplier Apollo) 2-(3-Fluoro-5-trifluoromethyl- phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid cyclohexylmethyl-amide A B

3.96 465 C₂₀H₁₉F₇N₄O 91 Cyclohexanemethanamine 3-Bromo-5- trifluoromethyl- phenylamine (Supplier Avacado) 2-(3-Bromo-5-trifluoromethyl- phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid cyclohexylmethyl-amide A B

4.13 524 C₂₀H₁₉ ⁷⁹BrF₆N₄O 92 Cyclohexanemethanamine 2-Chloro-3- methyl- phenylamine (WO 97/41846- hydrogenate 2- chloro-3-nitrotoluene.) 2-(2-Chloro-3-methyl- phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid cyclohexylmethyl-amide A B

3.82 427 C₂₀H₂₂ ³⁵Cl F₃N₄O 93 Cyclohexanemethanamine 2-Chloro-2- methyl- phenylamine (Supplier Aldrich) 2-(3-Chloro-2-methyl- phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid cyclohexylmethyl-amide A B

3.76 427 C₂₀H₂₂ ³⁵Cl F₃N₄O 94 Cyclohexanemethanamine 4-Chloro-2- methyl- phenylamine (Supplier Aldrich) 2-(4-Chloro-2-methyl- phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid cyclohexylmethyl-amide A B

3.77 427 C₂₀H₂₂ ³⁵Cl F₃N₄O 95 Cyclohexanemethanamine 4-Chloro-2,6- dimethyl- phenylamine (Supplier Davos) 2-(4-Chloro-2,6-dimethyl- phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid cyclohexylmethyl-amide A B

3.79 441 C₂₁H₂₄ ³⁵Cl F₃N₄O 96 Cyclopentanemethanamine 3,5- difluoroaniline (Aldrich) 2-(3,5-Difluoro-phenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopentylmethyl-amide A C

3.70 401 C₁₈H₁₇F₅N₄O 97 Cyclopentanemethanamine 3-Fluoro-4- (trifluoromethyl) aniline (Fluorochem) 2-(4-Trifluoromethyl-3- fluorophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopentylmethyl- amide A B

3.86 451 C₁₉H₁₇F₇N₄O 98 4- Aminomethyltetrahydropyran (CombiBlocks) 2,4-Difluoroaniline (Lancaster) 2-(2,4-Difluorophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid tetrahydro-pyran- 4-ylmethyl)-amide A A

3.03 417 C₁₈H₁₇F₅N₄O₂ 99 4- Aminomethyltetrahydropyran (CombiBlocks) 2-Fluoro-4- chloroaniline (Lancaster) 2-(2-Fluoro-4-chlorophenylamino)- 4-trifluoromethyl-pyrimidine-5- carboxylic acid (tetrahydro-pyran- 4-ylmethyl)-amide A A

3.23 433 C₁₆H₁₇ ³⁵Cl F₄N₄O₂ 100 Cyclohexanemethanamine (Lancaster) 2-Trifluoromethyl- 4-fluoroaniline (Lancaster) 2-(2-Trifluoromethyl-4- fluorophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclohexylmethyl- amide A B

3.69 465 C₂₀H₁₉F₇N₄O 101 Cyclobutanemethanamine 2-Trifluoromethyl- 4-fluoroaniline (Lancaster) 2-(2-Trifluoromethyl-4- fluorophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclobutylmethyl- amide A B

3.49 437 C₁₈H₁₅F₇N₄O 102 Cyclobutanemethanamine 2-Chloro-4- trifluoromethylaniline (Lancaster) 2-(2-Chloro-4- trifluoromethylphenylamino)-4- trifluromethyl-pyrimidine-5- carboxylic acid cyclobutylmethyl- amide A B

3.79 453 C₁₈H₁₅ ³⁵Cl F₆N₄O 103 Cyclobutanemethanamine 2-Chloro-4- cyanoaniline (Lancaster) 2-(2-Chloro-4- cyanophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclobutylmethyl- amide B C

3.47 410 C₁₈H₁₅ ³⁵ClF₃N₅O 104 4- Aminomethyltetrahydropyran (CombiBlocks) 2-Trifluoromethyl- 4-chloroaniline (Lancaster) 2-(2-Trifluoromethyl-4- chlorophenylamino)-4- trifuoromethyl-pyrimidine-5- carboxylic acid (tetrahydro-pyran- 4-ylmethyl)-amide A A

3.34 483 C₁₉H₁₇ ³⁵Cl F₆N₄O₂ 105 Cyclobutylmethylamine 2-Trifluoromethyl- 4-bromooaniline (Lancaster) 2-(2-Trifluoromethyl-4- bromophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclobutylmethyl- amide B (5 equiv, 45 min) B

3.71 499 C₁₈H₁₅ ⁸¹BrF₆N₄O 106 Cyclohexylmethylamine 2-Trifluoromethyl- 4-bromoaniline (Lancaster) 2-(2-Trifluoromethyl-4- bromophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclohexylmethyl- amide B (2.5 equiv, 45 min) B

3.89 527 C₂₀H₁₉ ⁸¹BrF₆N₄O 107 4- Aminomethyl- tetrahydropyran (ex CombiBlocks) 2,3-Difluoro- aniline (ex Aldrich) 2-(2,3-Difluoro-phenylamino)-4- tri-fluoromethyl-pyrimidine-5- carboxylic acid (tetrahydropyran- 4-ylmethyl)-amide A B

3.64 417 C₁₈H₁₇F₅N₄O₂ 108 4- Aminomethyl- tetrahydropyran (ex CombiBlocks) 5-Chloro-2- methylaniline (ex Aldrich) 2-(5-Chloro-2-methyl- phenylamino)-4-tri-fluoromethyl- pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)- amide A B

3.64 429 C₁₉H₂₀ ³⁵ClF₃N₄O₂ 109 4- Aminomethyl- tetrahydropyran (ex CombiBlocks) 3-Chloro-2 cyanoaniline (ex Lancaster) 2-(3-Chloro-2-cyano- phenylamino)-4-tri-fluoromethyl- pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)- amide B (5 equiv, 30 min) B

3.64 440 C₁₉H₁₇ ³⁵ClF₃N₅O₂ 110 4- Aminomethyl- tetrahydropyran (ex CombiBlocks) 2-Chloro-4- methylanilin 2-(2-Chloro-4-methyl- phenylamino)-4-tri-fluoromethyl- pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)- amide A B

3.27 429 C₁₉H₂₀ ³⁵ClF₃N₄O₂ 111 4- Aminomethyl- tetrahydropyran (ex CombiBlocks) 4-Chloro-3- cyanoaniline 2-(4-Chloro-3-cyano- phenylamino)-4-tri-fluoromethyl- pyrimidine-5-carboxylic acid (tetrahdropyran-4-ylmethyl)- amide A B

3.22 440 C₁₉H₁₇ ³⁵ClF₃N₅O₂ 112 4- Aminomethyl- tetrahydropyran (ex CombiBlocks) 4-Chloro-2- methylaniline (ex Aldrich) 2-(4-Chloro-2-methyl- phenylamino)-4-tri-fluoromethyl- pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)- amide A B

3.23 429 C₁₉H₂₀ ³⁵ClF₃N₄O₂ 113 4- Aminomethyl- tetrahydropyran (ex CombiBlocks) 2-Chloro-5- methylaniline (ex Aldrich) 2-(2-Chloro-5-methyl- phenylamino)-4-tri-fluoromethyl- pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)- amide A B

3.28 429 C₁₉H₂₀ ³⁵ClF₃N₄O₂ 257 (Cyclobutylmethyl)amine 2-Chloroaniline 2-(2-Chlorophenylamino)-4- trifluromethyl-pyrimidine-5- carboxylic acid cyclobutylmethyl- amide C (5 equivalents, 2 × 30 min) B

3.52 385 C₁₇H₁₆ ³⁵ClF₃N₄O 258 (Cyclobutylmethyl)amine 3-Fluoro-5- trifluoromethylaniline 2-(3-Fluoro-5- trifluoromethylphenylamino)-4- trifluromethyl-pyrimidine-5- carboxylic acid cyclobutylmethyl- amide C (5 equivalents, 2 × 30 min) B

3.80 437 C₁₈H₁₅F₇N₄O 259 (Cyclobutylmethyl)amine 5-Chloro-2- methylaniline 2-(5-Chloro-2- methylphenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclobutylmethyl- amide C (5 equivalents, 2 × 30 min) B

3.61 399 C₁₈H₁₈ ³⁵ClF₃N₄O **In Example 103-Preparation Method B (5 equiv, 15 min) N.B. Reaction mixture also contained 0.5 ml MeCN and purification method C The product was purified by trituration with isohexane after this. Method C-As for method B, but the solvent used was 1,4-dioxan not MeCN

TABLE 5 Mass spec details 1 Retention Time 2 MH⁺ Purification 3 Formula Compound Name Structure method consistent with MH⁺ 114 3-Fluorophenylamino-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopentyl-amide

A 3.23 369 C₁₇H₁₆F₄N₄O 115 2,6-Dichlorophenylamino-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclopentylamide

A 3.17 419 C₁₇H₁₅ ³⁵Cl₂F₃N₄O 116 3-Chlorophenylamino-4- trifluoromethylpyrimidine- 5-carboxylic acid (2-ethylbutyl)- amide

A 3.79 401 C₁₈H₂₀ ³⁵ClF₃N₄O 117 2-Phenylamino-4-trifluoromethyl- pyrimidin-5-carboxylic acid (2- methoxy-ethyl)-amide

A 2.98 339 C₁₅H₁₅F₃N₄O₂ 118 2-Phenylamino-4-trifluoromethyl- pyrimidin-5-carboxylic acid [2- (dimethyl-amino)ethyl]-amide

A 2.32 354 C₁₆H₁₈F₃N₅O 119 1-[2-(3-Chlorophenyl-amino)-4- trifluoro-methylpyrimidin-5-yl]-1- (4-methoxypiperin-1-yl)-methanone

A 3.33 415 C₁₈H₁₈ ³⁵ClF₃N₄O₂ 120 1-[2-(3-Chlorophenyl-amino)-4- trifluoro-methylpyrimidin-5-yl]-1- (1,1-dioxothiomorph-olin-4yl)- methanone

A 3.16 435 C₁₆H₁₄ ³⁵ClF₃N₄O₃S 121 N-((R)-1-{1-[2-(3- Chlorophenylamino)-4- trifluoromethyl-pyrimidin-5-yl]- methanoyl}-pyrrolidin-3-yl)- acetamide

A 2.91 428 C₁₈H₁₇ ³⁵ClF₃N₅O₂ 122 N-((S)-1-{1-[2-(3- Chlorophenylamino)-4- trifluoromethyl-pyrimidin-5-yl]- methanoyl}-pyrrolidin-3-yl)- acetamide

A 2.91 428 C₁₈H₁₇ ³⁵ClF₃N₅O₂ 123 1-{1-[2-(3-Chloro-phenylamino)-4- tri-fluoromethyl-pyrimidin-5-yl]- methanoyl}-piperidine-4-carboxylic acid methylamide

C Sol 1 2.98 442 C₁₉H₁₉ ³⁵ClF₃N₅O₂ 124 2-(3-Chlorophenyl-amino)-4- trifluoromethylpyrimidine-5- carboxylic acid (4-hydroxytetrahydro- pyran-4-ylmethyl)-amide

A 3.00 429 C₁₈H₁₈ ³⁵ClF₃N₄O₃ 125 2-(3-Fluorophenyl-amino)-4- trifluoromethylpyrimidine-5- carboxylic acid (1-hydroxytetrahydro- pyran-4-ylmethyl)-amide

A 2.86 413 C₁₈H₁₈F₄N₄O₃ 126 1-[2-(3-Chlorophenylamino)-4- trifluoromethylpyrimidin-5-yl]-1-(4- methylpiperazin-1-yl)-methanone

A 2.53 400 C₁₇H₁₇ ³⁵ClF₃N₅O 127 2-(3-Chlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (2-methoxy-ethyl)- amide

A 3.23 375 C₁₅H₁₄ ³⁵ClF₃N₄O₂ 128 2-(3-Chlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (2-dimethylamino- ethyl)-amide

A 2.51 388 C₁₆H₁₇ ³⁵ClF₃N₅O 129 2-(3-chlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid [R-1- (tetrahydrofuran-2-yl)methyl]-amide

A 3.25 401 C₁₇H₁₆ ³⁵ClF₃N₄O₂ 130 2-(Phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

A 3.01 381 C₁₈H₁₉F₃N₄O₂ 131 2-(2,3-Dichlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid cyclohexylamide

C Sol 2 3.74 433 C₁₈H₁₇ ³⁵Cl₂F₃N₄O 132 2-(3-Fluorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid cyclohexylamide

A 3.56 383 C₁₈H₁₆F₄N₄O 133 2-(3-Bromophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid cyclohexylamide

A 3.74 445 C₁₈H₁₈ ⁸¹BrF₃N₄O 134 2-(3-Fluorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (tetrahydropyran-4- yl)-amide

A 3.06 385 C₁₇H₁₆F₄N₄O₂ 135 2-(3-Bromophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (tetrahydropyran-4- yl)-amide

A 3.26 447 C₁₇H₁₆ ⁸¹BrF₃N₄O₂ 136 2-(2,4-Dichlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (tetrahydropyran-4- yl)-amide

A 3.33 435 C₁₇H₁₅ ³⁵Cl₂F₃N₄O₂ 137 2-(2,4-Dichlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid cyclohexylamide

A 3.79 433 C₁₆H₁₇ ³⁵Cl₂F₃N₄O 138 2-(3,4-Dichlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid cyclohexylamide

A 3.90 433 C₁₈H₁₇ ³⁵Cl₂F₃N₄O 139 2-(2,3-Dichlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (tetrahydropyran-4- yl)-amide

A 3.26 435 C₁₇H₁₅ ³⁵Cl₂F₃N₄O₂ 140 2-(3-Fluorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (tetrahydro-thiopyran- 4-yl)-amide

C Sol 2 3.37 401 C₁₇H₁₆F₄N₄OS 141 2-(3-Chlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (tetrahydro-thiopyran- 4-yl)-amide

C Sol 2 3.51 417 C₁₇H₁₆ ³⁵ClF₃N₄OS 142 2-(3-Bromophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (tetrahydro-thiopyran- 4-yl)-amide

C Sol 2 3.55 463 C₁₇H₁₆ ⁸¹BrF₃N₄OS 143 2-(2,4-Dichlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (tetrahydro-thiopyran- 4-yl)-amide

C Sol 2 3.61 451 C₁₇H₁₅ ³⁵Cl₂F₃N₄OS 144 2-(3,4-Dichlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (tetrahydro-thiopyran- 4-yl)-amide

C Sol 2 3.72 451 C₁₇H₁₅ ³⁵Cl₂F₃N₄OS 145 2-(3,4-Dichlorophenylamino)-4- trifluoromethylpyrimidine-5- carboxylic acid (1,1-dioxo- hexahydro-1 l⁶-thiopyran-4-yl)-amide

C Sol 3 3.32 483 C₁₇H₁₅ ³⁵Cl₂F₃N₄O₃S 260 3-Chlorophenylamino-4- trifluoromethyl-pyrimidine-5- carboxylic acid 2-(hydroxypropyl) amide

A 3.09 375 C₁₅H₁₄ ³⁵ClF₃N₄O₂ Compounds 114 to 145 were prepared as set out for table 2 and purified as follows: Purification Method A: as for reference example 1c, Purification Method C: The reaction was worked up as in example 1c, and the product purified by Biotage chromatography using the following solvent systems: Sol 1 ethyl acetate Sol 2 1% methanol in dichloromethane Sol 3 2% methanol in dichloromethane

Table 6

Preparation Method A: refers to the procedure give in part (b) of Example 166. Preparation Method B: Exemplified by Example 154: A mixture of 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg), 3,5-dicyanoaniline (69 mg), and acetonitrile (0.5 ml) was irradiated in a microwave apparatus (the model used was the ‘Creator’, supplied by ‘Personal Chemistry’, operating at 300 Watts), at 180° C. for 60 min. The temperature, duration of irradiation, and number of equivalents of the substituted-aniline used are given after the method in the table. Preparation Method C: exemplified by Example 162: A mixture of 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (80 mg) and 4-fluoro-2-(trifluoromethyl)aniline (111 mg) was irradiated in microwave apparatus (the model used was the ‘Creator’, supplied by ‘Personal Chemistry’, operating at 300 Watts), at 190° C. for 45 min.

Purification was carried out as detailed in the table to give the product.

Purification Method A: refers to the procedure give in part (b) of Example 166. Purification Method B: mass directed autopurification using the procedures detailed at the beginning of the experimental. Purification Method C: The reaction was worked up as for part (b) of Example 166, and the crude product further purified by Biotage chromatography over Merck 9385 silica gel, eluting with isohexane/ethyl acetate (7:3).

TABLE 6 LCMS 1 Retention time (min) Preparation Purification 2 MH⁺ Ex. Compound Name Structure Method method 3 Consistent Formula 146 2-(3-Methoxy-5-trifluoromethyl- phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

A B 3.91 477 C₂₁H₂₂F₆N₄O₂ 147 2-(4-Chloro-3-methyl-phenylamino)- 4-trifluoromethyl-pyrimidine-5- carboxylic acid cyclohexylmethyl- amide

A B 3.96 427 C₂₀H₂₂ ³⁵ClF₃N₄O 148 2-(3-Chloro-4-methyl-phenylamino)- 4-trifluoromethyl-pyrimidine-5- carboxylic acid N-cyclohexylmethyl- amide

A B 3.92 427 C₂₀H₂₂ ³⁵ClF₃N₄O 149 2-(4-Chloro-3-cyano-phenylamino)- 4-trifluoromethyl-pyrimidine-5- carboxylic acid cyclohexylmethyl- amide

A B 3.76 438 C₂₀H₁₉ ³⁵ClF₃N₅O 150 2-(2-Chloro-5-methyl-phenylamino)- 4-trifluoromethyl-pyrimidine-5- carboxylic acid cyclohexylmethyl- amide

A B 3.82 427 C₂₀H₂₂ ³⁵ClF₃N₄O 151 2(3-Chloro-2,6-dimethyl- phenylamino)-4-trifluoromethyl- pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

A B 3.76 441 C₂₁H₂₄ ³⁵ClF₃N₄O 152 2-(3-Chloro-4-tri- fluoromethoxyphenyl-amino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclo-hexylmethyl- amide

A A 4.00 497 C₂₀H₁₉ ³⁵ClF₆N₄O₂ 153 2-(3-Fluoro-4-tri- fluoromethylphenyl-amino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclo-hexylmethyl- amide

A C 3.89 465 C₂₀H₁₉F₇N₄O 154 2-(3,5-Dicyano-phenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (tetrahydropyran-4- ylmethyl)-amide

B (180°, 60 mins, 3 equiv) B 3.01 431 C₂₀H₁₇F₃N₆O₂ 155 2-(3-Chloro-2,6-di- methylphenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (tetrahydro-pyran-4- ylmethyl)-amide

A B 3.22 443 C₂₀H₂₂ ³⁵ClF₃N₄O₂ 156 2-(2-Chloro-6-methyl-phenylamino)- 4-tri-fluoromethyl-pyrimidine-5- carboxylic acid (tetrahydropyran- 4-ylmethyl)-amide

B (180°, 60 mins, 5 equiv) B 3.05 429 C₁₉H₂₀ ³⁵ClF₃N₄O₂ 157 2-(2-Chloro-3-methyl-phenylamino)- 4-tri-fluoromethyl-pyrimidine-5- carboxylic acid (tetrahydropyran- 4-ylmethyl)-amide

A B 3.27 429 C₁₉H₂₀ ³⁵ClF₃N₄O₂ 158 2-(4-Chloro-2,6- dimethylphenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (tetrahydropyran-4- ylmethyl)-amide

A B 3.26 443 C₂₀H₂₂ ³⁵ClF₃N₄O₂ 159 2-(5-Chloro-2-sulfamoylphenyl- amino)-4-trifluoromethyl-pyrimidine- 5-carboxylic acid (tetrahydropyran-4- ylmethyl)-amide

B (180°, 60 mins, 5 equiv) B 3.08 494 C₁₈H₁₉ ³⁵ClF₃N₅O₄S 160 2-(2-Fluoro-4- trifluoromethylphenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclobutylmethyl- amide

A A 3.67 437 C₁₈H₁₅F₇N₄O 161 2-(2-Chloro-4- trifluoromethylphenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclohexylmethyl- amide

A B 3.97 481 C₂₀H₁₉ ³⁵ClF₆N₄O 162 2-(2-Trifluoromethyl-4- fluorophenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (tetrahydro-pyran- 4-ylmethyl)amide

C B 3.16 467 C₁₉H₁₇N₄O₂F₇ 261 2-(2-Fluoro-4- trifluoromethylphenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid (tetrahydropyran-4- ylmethyl)-amide

B 180°, 2 × 42 min, 5 equivalents B 3.37 467 C₁₉H₁₇F₇N₄O₂ 262 2-(3,5- Bistrifluoromethylphenylamino)-4- trifluoromethyl-pyrimidine-5- carboxylic acid cyclobutylmethyl- amide

B 180°, 30 min, 5 equivalents B Molecular ion observed [M − H]⁻ 485 consistent with molecular formula C₁₉H₁₅F₉N₄O

Example 163 2-(3-Methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3-methoxyphenylamino)-4-trifluoro-methylpyrimidine-5-carboxylic acid (32 mg) and cyclohexanemethanamine (16 μl, ex Lancaster) afforded the title compound (28 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.25 (3H, m), 1.5 (1H, m), 1.55-1.75 (5H, m), 3.06 (2H, t), 3.74 (3H, s), 6.63 (1H, d), 7.2-7.3 (2H, m), 7.54 (1H, s), 8.57 (1H, t), 8.74 (1H, s), 10.35 (1H, s).

LC/MS, t=3.57 min, Molecular ion observed [MH⁺]=409 consistent with the molecular formula C₂₀H₂₃F₃N₄O₂.

Example 164 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (1-hydroxycyclohexylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(3-chlorophenylamino)-4-trifluoro-methylpyrimidine-5-carboxylic acid (32 mg) and 1-aminomethyl-1-cyclohexanol hydrochloride (20 mg, ex Aldrich) afforded the title compound (29 mg).

NMR (DMSO-d6) δ 1.3 (1H, m), 1.4-1.5 (7H, m), 1.6 (2H, m), 3.28 (2H, d), 4.34 (1H, s), 7.16 (1H, d), 7.43 (1H, t), 7.73 (1H, d), 8.04 (1H, t), 8.51 (1H, t), 8.91 (1H, s), 10.65 (1H, s).

LC/MS, t=3.39 min, Molecular ion observed [M-H]⁻=427 consistent with the molecular formula C₁₉H₂₀ ³⁵ClF₃N₄O₂.

Example 165 2-(3-Bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (1-hydroxycyclohexylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(3-bromophenylamino)-4-trifluoro-methylpyrimidine-5-carboxylic acid (36.5 mg) and 1-aminomethyl-1-cyclohexanol hydro-chloride (20 mg, ex Aldrich) afforded the title compound (28 mg).

NMR (DMSO-d6) δ 1.25 (1H, m), 1.35-1.45 (7H, m), 1.6 (2H, m), 3.23 (2H, d), 4.28 (1H, s), 7.23 (1H, d), 7.31 (1H, t), 7.71 (1H, d), 8.12 (1H, s), 8.45 (1H, t), 8.85 (1H, s), 10.55 (1H, s).

LC/MS, t=3.43 min, Molecular ion observed [M-H]⁻=471 consistent with the molecular formula C₁₉H₂₀ ⁷⁹BrF₃N₄O₂.

Example 166 2-(3-Chloro-4-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

(a). To a solution of 2-chloro-4-trifluoromethyl-pyrimidin-5-carbonyl chloride (750 mg, ex Maybridge) in dichloromethane (15 ml) at −40° was added dropwise over 30 minutes a solution of cyclohexanemethanamine (0.35 ml, ex Lancaster) and triethylamine (0.41 ml) in dichloromethane (15 ml). Dichloromethane was removed under reduced pressure and ethyl acetate (20 ml) added. The solution was washed sequentially with water, 5% sodium bicarbonate solution and water, dried (MgSO₄), evaporated and triturated with ether:hexane to afford 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (666 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.25 (3H, m), 1.5 (1H, m), 1.55-1.75 (5H, m), 3.12 (2H, t), 8.75 (1H, t), 9.18 (1H, s).

LC/MS, t=3.31 min, Molecular ion observed [MH⁺]=322 consistent with the molecular formula C₁₃H₁₅ ³⁵ClF₃N₃O

(b). To a solution of 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (100 mg) in 1,4-dioxan (1 ml) was added 3-chloro-4-fluoroaniline (228 mg, ex Lancaster) and the solution stirred at reflux for 4 hours. Dioxan was removed under reduced pressure and ethyl acetate (5 ml) added. The solution was washed sequentially with 2N hydrochloric acid (2×3 ml) and water (3×3 ml), dried (MgSO₄), evaporated and triturated with isohexane to afford the title compound (107 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.25 (3H, m), 1.45 (1H, m), 1.6-1.75 (5H, m), 3.06 (2H, t), 7.25 (1H, t), 7.43 (1H, t), 7.56 (1H, t), 8.56 (1H, t), 8.69 (1H, s), 10.20 (1H, s).

LC/MS, t=3.81 min, Molecular ion observed [MH⁺]=431 consistent with the molecular formula C₁₉H₁₉ ³⁵ClF₄N₄O.

Example 167 2-(3-Chloro-2-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166(b), 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (100 mg) and 3-chloro-2-fluoroaniline (230 mg, ex Acros) afforded the title compound (101 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.25 (3H, m), 1.5 (1H, m), 1.6-1.8 (5H, m), 3.08 (2H, t), 7.43 (1H, t), 7.67 (1H, m), 8.07 (1H, d), 8.58 (1H, t), 8.80 (1H, s), 10.60 (1H, s).

LC/MS, t=3.71 min, Molecular ion observed [MH⁺]=431 consistent with the molecular formula C₁₉H₁₉ ³⁵ClF₄N₄O.

Example 168 2-(5-Chloro-2-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166(b), 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (100 mg) and 5-chloro-2-fluoroaniline (230 mg, ex Avocado) afforded the title compound (116 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.25 (3H, m), 1.5 (1H, m), 1.6-1.75 (5H, m), 3.07 (2H, t), 7.29 (1H, m), 7.36 (1H, t), 7.77 (1H, d of d), 8.57 (1H, t), 8.72 (1H, s), 10.15 (1H, s).

LC/MS, t=3.73 min, Molecular ion observed [MH⁺]=431 consistent with the molecular formula C₁₉H₁₉ ³⁵ClF₄N₄O.

Example 169 2-(3,5-Difluorophenylamino)-4-trifluoromethyl-pyrimidin-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (100 mg) and 3,5-difluoroaniline (200 mg, ex Lancaster) afforded the title compound (110 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.25 (3H, m), 1.5 (1H, m), 1.6-1.75 (5H, m), 3.09 (2H, t), 6.89 (1H, t), 7.54 (2H, d), 8.60 (1H, t), 8.85 (1H, s), 10.80 (1H, s).

LC/MS, t=3.74 min, Molecular ion observed [MH⁺]=415 consistent with the molecular formula C₁₉H₁₉F₅N₄O.

Example 170 2-(4-Chloro-2-trifluoromethylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (80 mg) and 4-chloro-2-trifluoromethylaniline (107 mg, ex Lancaster) afforded, after purification by mass-directed autopreparation technique, the title compound (6 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.25 (3H, m), 1.5 (1H, m), 1.55-1.75 (5H, m), 3.06 (2H, t), 7.76 (1H, d), 7.88 (1H, d), 7.97 (1H, s), 8.56 (1H, t), 8.70 (1H, s), 10.15 (1H, s).

LC/MS, t=3.97 min, Molecular ion observed [MH⁺]=481 consistent with the molecular formula C₂₀H₁₉ ³⁵ClF₆N₄O.

Example 171 2-(3-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

To a solution of 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (50 mg) in acetonitrile (0.5 ml) was added 3-aminobenzonitrile (92 mg, ex Aldrich) and the solution heated at 200° C. under microwave conditions for 45 minutes. Acetonitrile was removed under reduced pressure and ethyl acetate (5 ml) added. The solution was washed sequentially with 2N hydrochloric acid (2×3 ml) and water (3×3 ml), dried (MgSO₄), evaporated and the residue purified using silica gel chromatography with 1:1 ethyl acetate:isohexane to afford the title compound (37 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.25 (3H, m), 1.5 (1H, m), 1.6-1.8 (5H, m), 3.08 (2H, t), 7.50 (1H, d), 7.57 (1H, t), 8.00 (1H, d), 8.25 (1H, s), 8.59 (1H, t), 8.83 (1H, s), 10.75 (1H, s).

LC/MS, t=3.51 min, Molecular ion observed [MH⁺]=404 consistent with the molecular formula C₂₀H₂₀F₃N₅O.

Example 172 2-(3-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(3-cyanophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (32 mg) and 4-aminomethyltetrahydropyran (14 mg, ex Combi Blocks) afforded the title compound (26 mg).

NMR (DMSO-d6) δ 1.15-1.25 (2H, m), 1.62 (2H, d), 1.74 (1H, m), 3.14 (2H, t), 3.27 (2H, t), 3.86 (2H, d of d), 7.50 (1H, d), 7.57 (1H, t), 8.00 (1H, d), 8.26 (1H, s), 8.65 (1H, t), 8.85 (1H, s), 10.70 (1H, s).

LC/MS, t=2.94 min, Molecular ion observed [MH⁺]=406 consistent with the molecular formula C₁₉H₁₈F₃N₅O₂.

Example 173 2-(3-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(3-cyanophenylamino)-4-trifluoro-methylpyrimidine-5-carboxylic acid (32 mg) and cyclopentanemethanamine hydrochloride (17 mg) afforded the title compound (16 mg).

NMR (DMSO-d6) δ 1.20-1.30 (2H, m), 1.45-1.6 (4H, m), 1.65-1.75 (2H, m), 2.08 (1H, quintuplet), 3.19 (2H, t), 7.50 (1H, d), 7.57 (1H, t), 8.00 (1H, d), 8.25 (1H, s), 8.63 (1H, t), 8.82 (1H, s), 10.70 (1H, s).

LC/MS, t=3.42 min, Molecular ion observed [MH⁺]=390 consistent with the molecular formula C₁₉H₁₈F₃N₅O.

Example 174 2-(4-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(4-cyanophenylamino)-4-trifluoro-methylpyrimidine-5-carboxylic acid (32 mg) and cyclohexanemethanamine (16 μl, ex Lancaster) afforded the title compound (18 mg).

NMR (DMSO-d6) δ 0.85-1.0 (2H, m), 1.1-1.25 (3H, m), 1.5 (1H, m), 1.6-1.8 (5H, m), 3.08 (2H, t), 7.81 (2H, d), 7.97 (2H, d), 8.61 (1H, t), 8.85 (1H, s), 10.90 (1H, s).

LC/MS, t=3.51 min, Molecular ion observed [MH⁺]=404 consistent with the molecular formula C₂₀H₂₀F₃N₅O.

Example 175 2-(4-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(4-cyanophenylamino)-4-trifluoro-methylpyrimidine-5-carboxylic acid (32 mg) and 4-aminomethyltetrahydropyran (14 mg, ex Combi Blocks) afforded the title compound (6 mg).

NMR (DMSO-d6) δ 1.15-1.25 (2H, m), 1.60 (2H, d), 1.75 (1H, m), 3.14 (2H, t), 3.27 (2H, t), 3.86 (2H, d), 7.82 (2H, d), 7.97 (2H, d), 8.67 (1H, t), 8.87 (1H, s), 10.85 (1H, s).

LC/MS, t=2.92 min, Molecular ion observed [MH⁺]=406 consistent with the molecular formula C₁₉H₁₈F₃N₅O₂.

Example 176 2-(4-Cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1(c) 2-(4-cyanophenylamino)-4-trifluoro-methylpyrimidine-5-carboxylic acid (32 mg) and cyclopentanemethanamine hydrochloride (17 mg) afforded the title compound (22.5 mg).

NMR (DMSO-d6) δ 1.15-1.30 (2H, m), 1.45-1.65 (4H, m), 1.65-1.75 (2H, m), 2.08 (1H, quintuplet), 3.17 (2H, t), 7.82 (2H, d), 7.97 (2H, d), 8.64 (1H, t), 8.84 (1H, s), 10.90 (1H, s).

LC/MS, t=3.40 min, Molecular ion observed [MH⁺]=390 consistent with the molecular formula C₁₉H₁₈F₃N₅O.

Example 177 2-(3-Methoxy-5-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

(a). To a solution of 2-chloro-4-trifluoromethyl-pyrimidin-5-carbonyl chloride (1.5 g) in dichloromethane (20 ml) at −2° was added a dropwise a solution of 4-aminomethyltetrahydropyran (0.70 g, ex Combi Blocks) and triethylamine (1.05 ml) in dichloromethane (10 ml) and the solution stirred at 0° for 1 hour. Dichloromethane was removed under reduced pressure and ethyl acetate (30 ml) added. The solution was washed with 2N hydrochloric acid (3×20 ml), dried (MgSO₄), evaporated and the residue purified using silica gel chromatography with 1:1 ethyl acetate:isohexane to afford 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-yl-methyl)-amide (1.20 g).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.61 (2H, d), 1.74 (1H, m), 3.17 (2H, t), 3.25 (2H, t), 3.86 (2H, d of d), 8.81 (1H, t), 9.20 (1H, s).

LC/MS, t=2.54 min, Molecular ion observed [MH⁺]=324 consistent with the molecular formula C₁₂H₁₃ ³⁵ClF₃N₃O₂

(b). In a manner similar to Example 166(b), 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg) and 3-methoxy-5-(trifluoromethyl)aniline (148 mg, ex Aldrich) afforded after stirring at reflux for 24 hours the title compound (51 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.62 (2H, d), 1.74 (1H, m), 3.13 (2H, t), 3.27 (2H, t), 3.83 (3H, s), 3.86 (2H, d), 6.92 (1H, s), 7.73 (1H, s), 7.80 (1H, s), 8.64 (1H, t), 8.85 (1H, s), 10.65 (1H, s).

LC/MS, t=3.38 min, Molecular ion observed [MH⁺]=479 consistent with the molecular formula C₂₀H₂₀F₆N₄O₃.

Example 178 2-(3,5-Bis-trifluoromethylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg) and 3,5-bis(trifluoromethyl)aniline (177 mg, ex Aldrich) afforded, after stirring at reflux for 80 hours and purification by mass-directed autopreparation technique, the title compound (24.5 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.62 (2H, d), 1.75 (1H, m), 3.14 (2H, t), 3.28 (2H, t), 3.86 (2H, d), 7.72 (1H, s), 8.49 (2H, s), 8.67 (1H, t), 8.93 (1H, s), 11.05 (1H, s).

LC/MS, t=3.62 min, Molecular ion observed [MH⁺]=517 consistent with the molecular formula C₂₀H₁₇F₉N₄O₂.

Example 179 2-(3-Bromo-5-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg) and 3-bromo-5-(trifluoro-methyl)aniline (185 mg, ex Avocado) afforded, after stirring at reflux for 80 hours and purification by mass-directed autopreparation technique, the title compound (28 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.62 (2H, d), 1.74 (1H, m), 3.14 (2H, t), 3.28 (2H, t), 3.86 (2H, d), 7.60 (1H, s), 8.24 (1H, s), 8.29 (1H, s), 8.66 (1H, t), 8.99 (1H, s), 10.90 (1H, s).

LC/MS, t=3.63 min, Molecular ion observed [M-H]⁻=527 consistent with the molecular formula C₁₉H₁₇ ⁷⁹BrF₆N₄O₂.

Example 180 2-(3-Fluoro-5-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg) and 3-fluoro-5-(trifluoromethyl)aniline (138 mg, ex Fluorochem) afforded after stirring at reflux for 24 hours the title compound (44 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.62 (2H, d), 1.75 (1H, m), 3.14 (2H, t), 3.28 (2H, t), 3.86 (2H, d), 7.32 (1H, d), 7.96 (1H, d), 8.06 (1H, s), 8.67 (1H, t), 8.90 (1H, s), 10.90 (1H, s).

LC/MS, t=3.45 min, Molecular ion observed [MH⁺]=467 consistent with the molecular formula C₁₉H₁₇F₇N₄O₂.

Example 181 2-(2-Fluoro-3-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg) and 2-fluoro-3-(trifluoromethyl)aniline (138 mg, ex Aldrich) afforded, after stirring at reflux for 80 hours and purification by mass-directed autopreparation technique, the title compound (15 mg).

NMR (DMSO-d6) δ 1.1-1.25 (2H, m), 1.60 (2H, d), 1.73 (1H, m), 3.11 (2H, t), 3.26 (2H, t), 3.85 (2H, d), 7.43 (1H, t), 7.61 (1H, t), 7.92 (1H, s), 8.63 (1H, t), 8.72 (1H, s), 10.30 (1H, s).

LC/MS, t=3.28 min, Molecular ion observed [MH⁺]=467 consistent with the molecular formula C₁₉H₁₇F₇N₄O₂.

Example 182 2-(2-Methylthio-3-(trifluoromethyl)phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

2-Chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg), 2-methylthio-3-(trifluoromethyl)aniline (125 mg, ex Maybridge) and acetonitrile (0.5 ml) were heated at 190° under microwave irradiation for 30 minutes. The solvent was evaporated in vacuo and the residue purified by mass-directed autopreparation technique, to give the title compound (11 mg).

NMR (DMSO-d6) δ 1.1-1.25 (2H, m), 1.60 (2H, d), 1.73 (1H, m), 2.24 (3H, s), 3.12 (2H, t), 3.26 (2H, t), 3.85 (2H, d), 7.65 (2H, d), 8.11 (1H, t), 8.64 (1H, t), 8.72 (1H, s), 9.81 (1H, s).

LC/MS, t=3.53 min, Molecular ion observed [MH⁺]=495 consistent with the molecular formula C₂₀H₂₀F₆N₄O₂S.

Example 183 2-(5-Chloro-2-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (cyclopentylmethyl)-amide

(a). To a solution of 2-chloro-4-trifluoromethyl-pyrimidin-5-carbonyl chloride (1.0 g, ex Maybridge) in dichloromethane (7 ml) at −2′ was added a dropwise a solution of cyclopentanemethanamine hydrochloride (0.55 g) and triethylamine (1.4 ml) in dichloromethane (13 ml) and the solution stirred at 0° for 1 hour. Dichloromethane was removed under reduced pressure and ethyl acetate (20 ml) added. The solution was washed with 2N hydrochloric acid (3×15 ml), dried (MgSO₄), evaporated and triturated with isohexane to afford 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (cyclopentylmethyl)-amide (838 mg).

NMR (DMSO-d6) δ 1.1-1.3 (2H, m), 1.45-1.65 (4H, m), 1.65-1.8 (2H, m), 2.07 (1H, quintuplet), 3.20 (2H, t), 8.78 (1H, t), 9.17 (1H, s).

LC/MS, t=3.22 min, Molecular ion observed [M-H]⁻=306 consistent with the molecular formula C₁₂H₁₃ ³⁵ClF₃N₃O.

(b). In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethylamide (47.5 mg) and 5-chloro-2-methylaniline (110 mg, ex Aldrich) afforded after stirring at reflux for 30 hours the title compound (41 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.4-1.6 (4H, m), 1.65-1.75 (2H, m), 2.06 (1H, quintuplet), 2.20 (3H, s), 3.14 (2H, t), 7.19 (1H, d), 7.29 (1H, d), 7.48 (1H, s), 8.55 (1H, t), 8.63 (1H, s), 9.83 (1H, s).

LC/MS, t=3.68 min, Molecular ion observed [MH⁺]=413 consistent with the molecular formula C₁₉H₂₀ ³⁵ClF₃N₄O.

Example 184 2-(3-Chloro-4-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg) and 3-chloro-4-methyl-aniline (109 mg) afforded, after stirring at reflux for 24 hours and purification by mass-directed autopreparation technique, the title compound (35 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.61 (2H, d), 1.74 (1H, m), 2.28 (3H, s), 3.13 (2H, t), 3.27 (2H, t), 3.86 (2H, d of d), 7.31 (1H, d), 7.56 (1H, d), 7.94 (1H, s), 8.61 (1H, t), 8.79 (1H, s), 10.50 (1H, s).

LC/MS, Molecular ion observed [MH⁺]=429 consistent with the molecular formula C₁₉H₂₀ ³⁵ClF₃N₄O₂.

Example 185 2-(3-Chloro-2-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg) and 3-chloro-2-methyl-aniline (109 mg, known compound CAS No 87-60-5) afforded, after stirring at reflux for 24 hours and purification by mass-directed autopreparation technique, the title compound (30 mg).

NMR (DMSO-d6) δ 1.1-1.25 (2H, m), 1.59 (2H, d), 1.72 (1H, m), 2.21 (3H, s), 3.10 (2H, t), 3.26 (2H, t), 3.84 (2H, d of d), 7.24 (1H, t), 7.3 (2H, m), 8.56 (1H, t), 8.61 (1H, s), 9.99 (1H, s).

LC/MS, t=3.19 min, Molecular ion observed [MH⁺]=429 consistent with the molecular formula C₁₉H₂₀ ³⁵ClF₃N₄O₂.

Example 186 2-(4-Chloro-3-methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg) and 4-chloro-3-methoxy-aniline (122 mg) afforded, after stirring at reflux for 24 hours and purification by mass-directed autopreparation technique, the title compound (33 mg).

NMR (DMSO-d6) δ 1.1-1.25 (2H, m), 1.61 (2H, d), 1.73 (1H, m), 3.13 (2H, t), 3.27 (2H, t), 3.83 (3H, s), 3.86 (2H, d), 7.27 (1H, d), 7.37 (1H, d), 7.81 (1H, s), 8.63 (1H, t), 8.80 (1H, s), 10.50 (1H, s).

LC/MS, t=3.26 min, Molecular ion observed [MH⁺]=445 consistent with the molecular formula C₁₉H₂₀ ³⁵ClF₃N₄O₃.

Example 187 2-(4-Chloro-3-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide

In a manner similar to Example 166(b) 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydropyran-4-ylmethyl)-amide (50 mg) and 4-chloro-3-methyl-aniline (109 mg, ex Lancaster) afforded, after stirring at reflux for 24 hours and purification by mass-directed autopreparation technique, the title compound (33 mg).

NMR (DMSO-d6) δ 1.15-1.3 (2H, m), 1.61 (2H, d), 1.73 (1H, m), 2.31 (3H, s), 3.12 (2H, t), 3.27 (2H, t), 3.86 (2H, d), 7.37 (1H, d), 7.62 (1H, d), 7.72 (1H, s), 8.61 (1H, t), 8.77 (1H, s), 10.45 (1H, s).

LC/MS, t=3.41 min, Molecular ion observed [MH⁺]=429 consistent with the molecular formula C₁₉H₂₀ ³⁵ClF₃N₄O₂.

Example 188 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-methyl-amide a) N-(Cyclobutylmethyl)-2,2,2-trifluoroacetamide

C-cyclobutyl-methylamine hydrochloride (1.82 g) was added to a solution of N,N-diisopropylethylamine (4.14 g) in dry tetrahydrofuran (30 ml) at 0° C. The mixture was stirred at 0° C. for 5 mins then cooled to −20° C. A solution of trifluoroacetic anhydride (3.57 g) in tetrahydrofuran (10 ml) was added dropwise over 10 mins and the mixture was then allowed to stir at room temperature for 1 hour. The solution was diluted with ether (100 ml) and water (75 ml), separated and the organic layer washed with water, dilute hydrochloric acid, water and brine, dried (MgSO₄) and evaporated to give the title compound (2.63 g)

NMR (CDCl₃) δ 1.70 (2H, m excess), 1.93 (2H, m), 2.10 (2H, m), 2.53 (1H, m), 3.39 (2H, t), 6.2 (1H, br s).

b) N-(Cyclobutylmethyl)-N-methylamine

N-(Cyclobutylmethyl)-2,2,2-trifluoroacetamide (2.62 g) and iodomethane (3.6 ml) were dissolved in dry acetone (75 ml). Powdered potassium hydroxide (3.2 g) was added and the mixture heated at reflux for 5 mins. The excess iodomethane and acetone were removed under reduced pressure, water (75 ml) added and the solution heated at reflux for 1 hour. The mixture was cooled and ether (75 ml) added. The layers were separated and the organic layer was extracted with dilute hydrochloric acid (75 ml). The aqueous extract was washed with ether, then made strongly basic with sodium hydroxide and extracted with ether (2×75 ml). The extracts were dried (K₂CO₃) and evaporated to give the title compound (517 mg)

NMR (CDCl₃) δ 1.3 (1H, m excess), 1.65 (2H, m), 1.9 (2H, m), 2.05 (2H, m), 2.45 (4H, m), 2.55 (2H, d).

c) 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-methyl-amide

To a solution of N-(cyclobutylmethyl)-N-methylamine (17 mg) in dimethylformamide (1.5 ml) was added successively, 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg), N,N-diisopropylethylamine (38 ul), 1-hydroxybenzotriazole hydrate (23 mg) and 1-(3-dimethylamino-propyl)-3-ethylcarbodiimide hydrochloride (25 mg). The solution was stirred overnight. Dimethylformamide was removed under reduced pressure and ethyl acetate (10 ml) added. The solution was washed sequentially with 10 ml portions of water, saturated sodium bicarbonate solution, water, dilute hydrochloric acid, water and brine, dried (MgSO₄) and evaporated to give the title compound (31 mg).

NMR (DMSO-d6) Rotamers in 60:40 ratio δ 1.5-2.1 (6H, m), 2.50 (0.4H, m excess), 2.65 (0.6H, m), 2.84 (1.8H, s), 2.94 (1.2H, s), 3.22 (0.4H, d), 3.50 (1.6H, br s), 7.09 (1H, d), 7.36 (1H, m), 7.66 (1H, m), 7.96 (1H, s), 8.76 (1H, d), 10.5 (1H, s).

LC/MS t=3.66 min, Molecular ion observed (MH⁺)=399 consistent with the molecular formula C₁₈H₁₈ ³⁵ClF₃N₄O

Example 189 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-methyl-amide a) N-(Cyclohexylmethyl)-2,2,2-trifluoroacetamide

In a manner similar to Example 188a) cyclohexanemethanamine (2.83 g) (Lancaster) gave the title compound (5.09 g).

NMR (CDCl₃) δ 0.95 (2H, m), 1.22 (3H, m), 1.54 (1H, m excess), 1.70 (5H, m), 3.21 (2H, t), 6.3 (1H, br s).

b) N-(Cyclohexylmethyl)-N-methylamine

In a manner similar to Example 188b) N-(cyclohexylmethyl)-2,2,2-trifluoroacetamide (2.98 g) gave the title compound (1.41 g).

NMR (CDCl₃) δ 0.9 (2H, m), 1.23 (4H, m), 1.46 (1H, m excess), 1.72 (5H, m), 2.4 (5H, m).

c) 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-methyl-amide

In a manner similar to Example 188c) 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and N-(cyclohexylmethyl)-N-methylamine (21 mg) gave the title compound.

NMR (DMSO-d6) Rotamers in 63:37 ratio δ 0.65-1.30 (5H, m), 1.5-1.8 (6H, m), 2.87 (1.9H, s), 2.97 (1.1H, s), 3.03 (0.7H, d), 3.30 (1.3H, d excess), 7.09 (1H, d), 7.36 (1H, m), 7.66 (1H, d), 7.96 (1H, m), 8.73 (0.37H, s), 8.78 (0.63H, s), 10.6 (1H, s).

LC/MS t=3.87 min, Molecular ion observed (MH⁺)=427 consistent with the molecular formula C₂₀H₂₂ ³⁵ClF₃N₄O

Example 190 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-methyl-amide a) N-(Cyclopentylmethyl)-2,2,2-trifluoroacetamide

In a manner similar to Example 188a) (cyclopentylmethyl)amine (1.02 g) (Example 2) gave the title compound (1.47 g).

NMR (CDCl₃) δ 1.21 (2H, m), 1.4 (4H, m), 1.78 (2H, m), 2.10 (1H, m), 3.31 (2H, t), 6.3 (1H, br s).

b) N-(Cyclopentylmethyl)-N-methylamine hydrochloride

In a manner similar to Example 188b) N-(cyclopentylmethyl)-2,2,2-trifluoroacetamide (1.46 g) gave, after treatment with hydrogen chloride in 1,4-dioxan, the title compound (0.77 g).

NMR (D₂O) δ 1.12 (2H, m), 1.5 (4H, m), 1.75 (2H, m), 2.08 (1H, m), 2.61 (3H, s), 2.90 (2H, d).

c) 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-methyl-amide

In a manner similar to Example 188c) 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and N-(cyclopentylmethyl)-N-methylamine hydrochloride (21 mg) together with an additional equivalent of N,N-diisopropylethylamine gave the title compound (42 mg)

NMR (DMSO-d6) Rotamers in 65:35 ratio δ 1.0-1.8 (8H, m), 2.13 (0.35H, m), 2.27 (0.65H, m), 2.88 (1.95H, s), 2.99 (1.05H, s), 3.14 (0.7H, d), 3.41 (1.3H, br s), 7.09 (1H, d), 7.36 (1H, t), 7.66 (1H, d), 7.96 (1H, m), 8.77 (1H, s), 10.6 (1H, s).

LC/MS t=3.77 min, Molecular ion observed (MH⁺)=413 consistent with the molecular formula C₁₉H₂₀ ³⁵ClF₃N₄O

Example 191 2-(5-Chloro-2-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide a) 2-Chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

A mixture of 2-chloro-4-trifluoromethyl-pyrimidine-5-carbonyl chloride (613 mg) (Maybridge) and C-cyclobutylmethylamine hydrochloride (304 mg) in dry dichloromethane (10 ml) was cooled to −30° C. and N,N-diisopropylethylamine (958 ul) was added dropwise. The mixture was stirred at room temp for 1 hour. Water (10 ml) was added, the layers separated and the organic layer was washed sequentially with 10 ml portions of water, dilute hydrochloric acid, water, dilute sodium bicarbonate solution and water, dried (MgSO₄) and evaporated. Purification by chromatography on silica gel (dichloromethane/ether 25:1) gave the title compound (449 mg).

NMR (CDCl₃) δ 1.75 (2H, m), 1.93 (2H, m), 2.10 (2H, m), 2.57 (1H, m), 3.50 (2H, t), 5.86 (1H, br s), 8.90 (1H, s).

b) 2-(5-Chloro-2-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 5-chloro-2-fluoroaniline (109 mg) (Avocado) and 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (44 mg) gave the title compound (45 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 1.99 (2H, m), 2.47 (1H, m excess), 3.25 (2H, t), 7.3 (2H, m), 7.76 (1H, m), 8.56 (1H, t), 8.70 (1H, s), 10.2 (1H, s)

LC/MS t=3.52 min, Molecular ion observed (MH⁺)=403 consistent with the molecular formula C₁₇H₁₅ ³⁵ClF₄N₄O

Example 192 2-(3,5-Difluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 3,5-difluoroaniline (97 mg) (Lancaster) and 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (44 mg) gave the title compound (46 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.27 (2H, t), 6.88 (1H, m), 7.55 (2H, m), 8.60 (1H, t), 8.83 (1H, s), 10.8 (1H, s)

LC/MS t=3.54 min, Molecular ion observed (MH⁺)=387 consistent with the molecular formula C₁₇H₁₅F₅N₄O

Example 193 2-(3-Chloro-4-trifluoromethoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 3-chloro-4-trifluoromethoxy aniline (159 mg) (Lancaster) and 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (44 mg) gave the title compound (59 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.27 (2H, t), 7.56 (1H, d), 7.76 (1H, m), 8.16 (1H, d), 8.59 (1H, t), 8.81 (1H, s), 10.8 (1H, s)

LC/MS t=3.82 min, Molecular ion observed (MH⁺)=469 consistent with the molecular formula C₁₈H₁₅ ³⁵ClF₆N₄O₂

Example 194 2-(3-Chloro-4-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 3-chloro-4-fluoroaniline (109 mg) (Lancaster) and 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (44 mg) gave the title compound (50 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.27 (2H, t), 7.42 (1H, t), 7.67 (1H, m), 8.04 (1H, m), 8.57 (1H, t), 8.77 (1H, s), 10.6 (1H, s)

LC/MS t=3.60 min, Molecular ion observed (MH⁺)=403 consistent with the molecular formula C₁₇H₁₅ ³⁵ClF₄N₄O

Example 195 2-(3-Chloro-2-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 3-chloro-2-fluoroaniline (109 mg) (Acros) and 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (44 mg) gave the title compound (47 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.23 (2H, t), 7.22 (1H, t), 7.42 (1H, t), 7.54 (1H, t), 8.55 (1H, t), 8.65 (1H, s), 10.2 (1H, s)

LC/MS t=3.49 min, Molecular ion observed (MH⁺)=403 consistent with the molecular formula C₁₇H₁₅ ³⁵ClF₄N₄O

Example 196 2-(3-Fluoro-4-trifluoromethylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 3-fluoro-4-trifluoromethylaniline (134 mg) (ABCR) and 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid C-cyclobutylmethyl-amide (44 mg) gave the title compound (41 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.26 (2H, t), 7.67 (1H, d), 7.75 (1H, t), 8.02 (1H, d), 8.62 (1H, t), 8.87 (1H, s), 11.0 (1H, s)

LC/MS t=3.71 min, Molecular ion observed (MH⁺)=437 consistent with the molecular formula C₁₈H₁₅F₇N₄O

Example 197 2-(3-Chloro-4-cyanophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 3-chloro-4-cyanoaniline (114 mg) (Lancaster) and 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (44 mg) gave the title compound (26 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.27 (2H, t), 7.83 (1H, m), 7.93 (1H, d), 8.24 (1H, s), 8.62 (1H, t), 8.89 (1H, s), 11.1 (1H, s)

LC/MS t=3.50 min, Molecular ion observed (MH⁺)=410 consistent with the molecular formula C₁₈H₁₅ ³⁵ClF₃N₅O

Example 198 2-(3-Fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 188, 2-(3-fluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and C-cyclobutylmethylamine hydrochloride (18 mg) gave the title compound (31 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.26 (2H, t), 6.86 (1H, m), 7.37 (1H, m), 7.50 (1H, d), 7.76 (1H, m), 8.58 (1H, t), 8.78 (1H, s), 10.6 (1H, s)

LC/MS t=3.42 min, Molecular ion observed (MH⁺)=369 consistent with the molecular formula C₁₇H₁₆F₄N₄O

Example 199 2-(3-Bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 188, 2-(3-bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (36 mg) and C-cyclobutylmethylamine hydrochloride (18 mg) gave the title compound (33 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.26 (2H, t), 7.22 (1H, d), 7.31 (1H, t), 7.70 (1H, d), 8.10 (1H, t), 8.57 (1H, t), 8.78 (1H, s), 10.6 (1H, s)

LC/MS t=3.60 min, Molecular ion observed (MH⁺)=431 consistent with the molecular formula C₁₇H₁₆ ⁸¹BrF₃N₄O

Example 200 2-(2,3-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 188, 2-(2,3-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (36 mg) and C-cyclobutylmethylamine hydrochloride (18 mg) gave the title compound (36 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.24 (2H, t), 7.40 (1H, t), 7.54 (2H, m), 8.54 (1H, t), 8.63 (1H, s), 10.1 (1H, s)

LC/MS t=3.61 min, Molecular ion observed (MH⁺)=419 consistent with the molecular formula C₁₇H₁₅ ³⁵Cl₂F₃N₄O

Example 201 2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 188, 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (36 mg) and C-cyclobutylmethylamine hydrochloride (18 mg) gave the title compound (37 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.24 (2H, t), 7.47 (1H, m), 7.58 (1H, d), 7.72 (1H, d), 8.54 (1H, t), 8.65 (1H, s), 10.0 (1H, s)

LC/MS t=3.66 min, Molecular ion observed (MH⁺)=419 consistent with the molecular formula C₁₇H₁₅ ³⁵Cl₂F₃N₄O

Example 202 2-(2,5-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 188, 2-(2,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (36 mg) and C-cyclobutylmethylamine hydrochloride (18 mg) gave the title compound (33 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.24 (2H, t), 7.34 (1H, m), 7.58 (1H, d), 7.72 (1H, d), 8.55 (1H, t), 8.66 (1H, s), 10.0 (1H, s)

LC/MS t=3.65 min, Molecular ion observed (MH⁺)=419 consistent with the molecular formula C₁₇H₁₅ ³⁵Cl₂F₃N₄O

Example 203 2-(2,6-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 188, 2-(2,6-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (36 mg) and C-cyclobutylmethylamine hydrochloride (18 mg) gave the title compound (35 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.22 (2H, t), 7.39 (1H, t), 7.59 (2H, d), 8.56 (2H, m), 10.1 (1H, s).

LC/MS t=3.38 min, Molecular ion observed (MH⁺)=419 consistent with the molecular formula C₁₇H₁₅ ³⁵Cl₂F₃N₄O

Example 204 2-(3,4-Dichlorophenylamino-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 188, (3,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (36 mg) and C-cyclobutylmethylamine hydrochloride (18 mg) gave the title compound (36 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.26 (2H, t), 7.60 (1H, d), 7.69 (1H, m), 8.16 (1H, d), 8.58 (1H, t), 8.80 (1H, s), 10.7 (1H, s)

LC/MS t=3.77 min, Molecular ion observed (MH⁺)=419 consistent with the molecular formula C₁₇H₁₅ ³⁵Cl₂F₃N₄O

Example 205 2-(3-Methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 188, 2-(3-methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (31 mg) and C-cyclobutylmethylamine hydrochloride (18 mg) gave the title compound (38 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.26 (2H, t), 3.74 (3H, s), 6.63 (1H, d), 7.24 (2H, m), 7.52 (1H, s), 8.56 (1H, t), 8.72 (1H, s), 10.4 (1H, s)

LC/MS t=3.35 min, Molecular ion observed (MH⁺)=381 consistent with the molecular formula C₁₈H₁₉F₃N₄O₂

Example 206 2-(3,5-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 188, 2-(3,5-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (36 mg) and C-cyclobutylmethylamine hydrochloride (18 mg) gave the title compound (36 mg).

NMR (DMSO-d6) δ 1.7 (2H, m), 1.8 (2H, m), 2.0 (2H, m), 2.47 (1H, m excess), 3.26 (2H, t), 7.60 (1H, d), 7.69 (1H, m), 8.16 (1H, d), 8.58 (1H, t), 8.80 (1H, s), 10.7 (1H, s)

LC/MS t=3.84 min, Molecular ion observed (MH⁺)=419 consistent with the molecular formula C₁₇H₁₅ ³⁵Cl₂F₃N₄O

Example 207 2-(3-Bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylamide

In a manner similar to Example 188, 2-(3-bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (36 mg) and cyclopentylamine (18 mg) gave the title compound (28 mg).

NMR (DMSO-d6) δ 1.5 (4H, m), 1.66 (2H, m), 1.86 (2H, m), 4.16 (1H, m), 7.22 (1H, d), 7.31 (1H, t), 7.70 (1H, d), 8.10 (1H, t), 8.53 (1H, d), 8.79 (1H, s), 10.6 (1H, s)

LC/MS t=3.39 min, Molecular ion observed (MH⁺)=431 consistent with the molecular formula C₁₇H₁₆ ⁸¹BrF₃N₄O

Example 208 2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylamide

In a manner similar to Example 188, 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (26 mg) and cyclopentylamine (18 mg) gave the title compound (21 mg).

NMR (DMSO-d6) δ 1.5 (4H, m), 1.63 (2H, m), 1.84 (2H, m), 4.14 (1H, m), 7.47 (1H, m), 7.56 (1H, d), 7.71 (1H, d), 8.50 (1H, d), 8.62 (1H, s), 10.0 (1H, s)

LC/MS t=3.40 min, Molecular ion observed (MH⁺)=419 consistent with the molecular formula C₁₇H₁₅ ³⁵Cl₂F₃N₄O

Example 209 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopropylamide

In a manner similar to Reference Example 1 (c) 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (35 mg) and cyclopropylamine (9 mg, ex Lancaster) afforded the title compound (32 mg).

NMR (DMSO-d6) δ 0.49-0.52 (2H, m), 0.69-0.74 (2H, m), 2.78 (1H, m), 7.09 (1H, d), 7.36 (1H, t), 7.65 (1H, d), 7.95 (1H, s), 8.65 (1H, d), 8.80 (1H s), 10.60 (1H, s)

LC/MS, t=3.25 min, Molecular ion observed (MH⁺)=357 consistent with the molecular formula C₁₅H₁₂N₄OF₃ ³⁵Cl

Example 210 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (3,3-dimethylbutyl)-amide

In a manner similar to Reference Example 1 (c) 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (50 mg) and 3,3-dimethylbutylamine (17 mg, ex Aldrich) afforded the title compound (32 mg).

NMR (DMSO-d6) δ 0.96 (6H, d), 1.85 (1H, m), 3.12 (2H, t), 7.16 (1H, d), 7.42 (1H, t), 7.71 (1H, d), 8.02 (1H, s), 8.65 (1H, t), 8.86 (1H s), 10.70 (1H, s)

LC/MS, t=3.49 min, Molecular ion observed (MH⁺)=373 consistent with the molecular formula C₁₆H₁₆N₄OF₃ ³⁵Cl

Example 211 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid methyl-(tetrahydro-pyran-4-ylmethyl)-amide

(a). To a solution of 4-aminomethyltetrahydropyran (500 mg, ex Combi-Blocks, Inc.) in dichloromethane (10 ml) at 0° C. was added triethylamine (1.2 ml) followed by a solution of di-tert-butyl dicarbonate (1.14 g) in dichloromethane (4 ml). The reaction was stirred at 0° C. for 1 h. Dichloromethane was removed under reduced pressure and ethyl acetate added (10 ml). The solution was washed sequentially with 2N hydrochloric acid (10 ml), water (10 ml), 5% sodium bicarbonate solution (10 ml), and water (10 ml), dried (MgSO₄) and evaporated. The residue was purified by chromatography eluting with 2% MeOH/CH₂Cl₂, to afford N-(tetrahydro-pyran-4-ylmethyl)-carbamic acid tert-butyl ester (809 mg).

NMR (DMSO-d6) δ 1.15 (2H, m), 1.45 (9H, s), 1.80-1.95 (3H, d, m), 2.87 (2H, t), 3.30 (2H, t), 3.90 (2H, d, d), 6.95 (1H, t).

(b). To a solution of N-(tetrahydro-pyran-4-ylmethyl)-carbamic acid tert-butyl ester (800 mg) in THF (10 ml) at room temperature under nitrogen was added 60% sodium hydride (164 mg, ex Aldrich) portionwise. The reaction was stirred until effervescence had ceased and then methyl iodide (280 μl, ex Lancaster) was added. Stirring was continued at room temperature overnight. THF was removed under reduced pressure and ethyl acetate was added (10 ml). This was washed three times with water (10 ml), dried (MgSO₄) and evaporated. The residue was purified by chromatography eluting with 3% MeOH/CH₂Cl₂, to afford N-methyl-N-(tetrahydro-pyran-4-ylmethyl)-carbamic acid tert-butyl ester (745 mg).

NMR (DMSO-d6) δ 1.15 (2H, m), 1.45 (9H, s), 1.50 (2H, m), 1.80 (1H, m) 2.80 (3H, d), 3.08 (2H, d), 3.28 (2H, t), 3.85 (2H, d).

(c). A solution of N-methyl-N-(tetrahydro-pyran-4-ylmethyl)-carbamic acid tert-butyl ester (740 mg) in 4N hydrochloric acid in 1,4-dioxan (10 ml, ex Aldrich) was stirred at room temperature for 1 h. The dioxan was removed under reduced pressure and the residue triturated with ether. The solid was filtered onto a sinter, washed with ether and dried, to afford N-methyl-N-(tetrahydro-pyran-4-ylmethyl)-amine hydrochloride (460 mg).

NMR (DMSO-d6) δ 1.15 (2H, m), 1.65 (2H, d), 1.95 (1H, m) 2.50 (3H, d), 2.80 (2H, d), 3.30 (2H, t), 3.85 (2H, d), 9.0 (2H, s).

(d). In a manner similar to Reference Example 1 (c) 2-(3-chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (50 mg) and N-methyl-N-(tetrahydro-pyran-4-ylmethyl) amine hydrochloride (39 mg) afforded, after Biotage chromatography over silica gel, eluting with 1% MeOH/CH₂Cl₂, the title compound (33 mg).

NMR (DMSO-d6) Rotamers in 65:35 ratio δ 1.05 (0.7H, m), 1.23 (1.3H, m), 1.45 (0.7H, d), 1.58 (1.3H, d), 1.85 (0.35H, m), 2.0 (0.65H, m), 2.89 (1.95H, s), 2.98 (1.05H, s), 3.10-3.40 (4H, m), 3.80 (0.7H, d), 3.88 (1.3H, d), 7.10 (1H, d), 7.36 (1H, t), 7.65 (1H, t), 7.97 (1H, s), 8.75 (0.35H, s), 8.80 (0.65H, s), 10.6 (1H, s)

LC/MS, t=3.29 min, Molecular ion observed (MH⁺)=429 consistent with the molecular formula C₁₉H₂₀N₄O₂F₃ ³⁵Cl

Example 212 2-(2-Fluoro-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (100 mg) and 2-fluoro-3-chloroaniline (225 mg, ex Acros) afforded the title compound (85 mg) after purification by trituration with isohexane.

NMR (DMSO-d6) δ 1.14-1.23 (2H, m), 1.6 (2H, d), 1.72 (1H, m), 3.1 (2H, t), 3.25 (2H, m), 3.85 (2H, d), 7.24 (1H, t), 7.42 (1H, t), 7.55 (1H, t), 8.61 (1H, t), 8.70 (1H, s), 10.20 (1H, s)

LC/MS, t=3.14 min, Molecular ion observed (MH⁺)=433 consistent with the molecular formula C₁₈H₁₇N₄O₂F₄ ³⁵Cl

Example 213 2-(2-Fluoro-5-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (100 mg) and 2-fluoro-5-chloroaniline (225 mg, ex Avocado) afforded the title compound (96 mg) after purification by trituration with isohexane.

NMR (DMSO-d6) δ 1.17-1.23 (2H, m), 1.6 (2H, d), 1.72 (1H, m), 3.1 (2H, t), 3.25 (2H, m), 3.85 (2H, d), 7.27-7.37 (2H, t, m), 7.76 (1H, dd), 8.62 (1H, t), 8.73 (1H, s), 10.15 (1H, s)

LC/MS, t=3.15 min, Molecular ion observed (MH⁺)=433 consistent with the molecular formula C₁₈H₁₇N₄O₂F₄ ³⁵Cl

Example 214 2-(3,5-Difluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 167, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (100 mg) and 3,5-difluoroaniline (199 mg, ex Lancaster) afforded the title compound (98 mg) after purification by trituration with isohexane.

NMR (DMSO-d6) δ 1.18-1.25 (2H, m), 1.61 (2H, d), 1.74 (1H, m), 3.13 (2H, t), 3.27 (2H, m), 3.85 (2H, d), 6.88 (1H, t), 7.52 7.55 (2H, m), 8.66 (1H, t), 8.86 (1H, s), 10.80 (1H, s)

LC/MS, t=3.18 min, Molecular ion observed (MH⁺)=417 consistent with the molecular formula C₁₈H₁₇N₄O₂F₅

Example 215 2-(4-Fluoro-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (100 mg) and 4-fluoro-3-chloroaniline (225 mg, ex Lancaster) afforded the title compound (134 mg) after purification by trituration with isohexane.

NMR (DMSO-d6) δ 1.18-1.23 (2H, m), 1.61 (2H, d), 1.75 (1H, m), 3.1 (2H, t), 3.25 (2H, m), 3.85 (2H, d), 7.42 (1H, t), 7.65 (1H, m), 8.05 (1H, dd), 8.63 (1H, t), 8.80 (1H, s), 10.65 (1H, s)

LC/MS, t=3.25 min, Molecular ion observed (MH⁺)=433 consistent with the molecular formula C₁₈H₁₇N₄O₂F₄ ³⁵Cl

Example 216 2-(4-Trifluoromethoxy-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (100 mg) and 4-trifluoromethoxy-3-chloroaniline (327 mg, ex Lancaster) afforded the title compound (135 mg) after purification by trituration with isohexane.

NMR (DMSO-d6) δ 1.18-1.23 (2H, m), 1.61 (2H, d), 1.74 (1H, m), 3.13 (2H, t), 3.25 (2H, m), 3.85 (2H, d), 7.57 (1H, d), 7.75 (1H, dd), 8.14 (1H, d), 8.63 (1H, t), 8.84 (1H, s), 10.74 (1H, s)

LC/MS, t=3.51 min, Molecular ion observed (MH⁺)=499 consistent with the molecular formula C₁₉H₁₇N₄O₃F₆ ³⁵Cl

Example 217 2-(4-Cyano-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (100 mg) and 4-cyano-3-chloroaniline (236 mg, ex Lancaster) afforded the title compound (8 mg). Sample purified by mass directed auto-prep.

LC/MS, t=3.51 min, Molecular ion observed (MH⁺)=440 consistent with the molecular formula C₁₉H₁₇N₅O₂F₃ ³⁵Cl

Example 218 2-(4-Trifluoromethyl-3-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (100 mg) and 4-trifluoromethyl-3-fluoroaniline (277 mg, ex ABCR) afforded the title compound (125 mg) after purification by trituration with isohexane.

NMR (DMSO-d6) δ 1.16-1.25 (2H, m), 1.61 (2H, d), 1.73 (1H, m), 3.14 (2H, t), 3.25 (2H, m), 3.85 (2H, d), 7.67 (1H, d), 7.75 (1H, t), 8.02 (1H, d), 8.68 (1H, t), 8.90 (1H, s), 11.00 (1H, s)

LC/MS, t=3.38 min, Molecular ion observed (MH⁺)=467 consistent with the molecular formula C₁₉H₁₇N₄O₂F₇

Example 219 2-(4-Cyano-3-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethylamide (70 mg) and 4-cyano-3-chloroaniline (173 mg, ex Lancaster) afforded the title compound (125 mg). Purified by chromatography eluting with 1:1 ethyl acetate:hexane.

NMR (DMSO-d6) δ 1.20-1.25 (2H, m), 1.48-1.73 (6H, m), 2.08 (1H, m), 3.18 (2H, t), 7.83 (1H, dd), 7.84 (1H, d), 8.24 (1H, d), 8.66 (1H, t), 8.90 (1H s), 11.10 (1H, s)

LC/MS, t=3.68 min, Molecular ion observed (MH⁺)=424 consistent with the molecular formula C₁₉H₁₇N₅OF₃ ³⁵Cl

Example 220 2-(2,4-Dichloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (1,1-dioxo-hexahydro-1/⁶-thiopyran-4-yl)-amide

In a manner similar to Reference Example 1 (c) 2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (50 mg) and (1,1-dioxo-tetrahydro-2H-thiopyran-4-yl)amine hydrochloride (40 mg) (Ref. WO 02/18380) afforded the title compound (64 mg). Purified by chromatography eluting with 2% MeOH/CH₂Cl₂.

NMR (DMSO-d6) δ 1.97 (2H, m), 2.13 (2H, m), 3.13 (2H, m), 3.27 (2H, m), 4.10 (1H, m), 7.47 (1H, dd), 7.56 (1H, d), 7.72 (1H, d), 8.67 (1H t), 8.7 (1H, s), 10.05 (1H, s)

LC/MS, t=3.22 min, Molecular ion observed (MH⁺)=483 consistent with the molecular formula C₁₇H₁₅N₄O₃F₃ ³⁵Cl₂S

Example 221 2-(2,4-Difluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (80 mg) and 2,4-difluoroaniline (160 mg, ex Lancaster) afforded the title compound (77 mg) after purification by trituration with isohexane/diethylether.

NMR (DMSO-d6) δ 0.89-0.95 (2H, m), 1.15-1.20 (3H, m), 1.46-1.47 (1H, m), 1.60-1.72 (5H, m), 3.05 (2H, t), 7.10 (1H, t), 7.35 (1H, m), 7.52 (1H, m), 8.53 (1H t), 8.62 (1H, s), 10.00 (1H, s)

LC/MS, t=3.63 min, Molecular ion observed (MH⁺)=433 consistent with the molecular formula C₁₉H₁₉N₄OF₅

Example 222 2-(2-Chloro-4-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (80 mg) and 2-chloro-4-fluoroaniline (181 mg, ex Lancaster) afforded the title compound (91 mg).

NMR (DMSO-d6) δ 0.89-0.95 (2H, m), 1.15-1.20 (3H, m), 1.44-1.46 (1H, m), 1.62-1.72 (5H, m), 3.05 (2H, t), 7.27 (1H, m), 7.55 (2H, m), 8.52 (1H t), 8.60 (1H, s), 10.00 (1H, s)

LC/MS, t=3.73 min, Molecular ion observed (MH⁺)=431 consistent with the molecular formula C₁₉H₁₉N₄OF₄ ³⁵Cl

Example 223 2-(2,4-Difluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (80 mg) and 2,4-difluoroaniline (198 mg, ex Lancaster) afforded the title compound (82 mg) after purification by trituration with isohexane/diethylether.

NMR (DMSO-d6) δ 1.67-2.01 (6H, m), 2.47 (1H, m), 3.23 (2H, t), 7.10 (1H, t), 7.35 (1H, m), 7.52 (1H, m), 8.53 (1H t), 8.62 (1H, s), 10.00 (1H, s)

LC/MS, t=3.40 min, Molecular ion observed (MH⁺)=386 consistent with the molecular formula C₁₇H₁₅N₄OF₅

Example 224 2-(2-Chloro-4-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (80 mg) and 2-chloro-4-fluoroaniline (198 mg, ex Lancaster) afforded the title compound (80 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 1.67-2.00 (6H, m), 2.46 (1H, m), 3.23 (2H, t), 7.27 (1H, m), 7.55 (2H, m), 8.52 (1H t), 8.58 (1H, s), 9.90 (1H, s)

LC/MS, t=3.51 min, Molecular ion observed (MH⁺)=403 consistent with the molecular formula C₁₇H₁₅N₄OF₄ ³⁵Cl

Example 225 2-(2-Chloro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (80 mg) and 2-chloro-4-bromoaniline (257 mg, ex Lancaster) afforded the title compound (96 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 0.89-0.95 (2H, m), 1.15-1.20 (3H, m), 1.44-1.46 (1H, m), 1.62-1.72 (5H, m), 3.05 (2H, t), 7.52 (1H, d), 7.58 (1H, dd), 7.82 (1H, d), 8.55 (1H t), 8.63 (1H, s), 10.00 (1H, s)

LC/MS, t=3.97 min, Molecular ion observed (MH⁺)=493 consistent with the molecular formula C₁₉H₁₉N₄OF₃ ³⁵Cl⁸¹Br

Example 226 2-(2-Fluoro-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (80 mg) and 2-fluoro-4-chloroaniline (180 mg, ex Lancaster) afforded the title compound (73 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 0.95-0.98 (2H, m), 1.15-1.20 (3H, m), 1.44-1.46 (1H, m), 1.66-1.72 (5H, m), 3.05 (2H, t), 7.31 (1H, d), 7.53 (1H, dd), 7.60 (1H, t), 8.55 (1H t), 8.66 (1H, s), 10.00 (1H, s)

LC/MS, t=3.79 min, Molecular ion observed (MH⁺)=431 consistent with the molecular formula C₁₉H₁₉N₄OF₄ ³⁵Cl

Example 227 2-(2-Chloro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (80 mg) and 2-chloro-4-bromoaniline (281 mg, ex Lancaster) afforded the title compound (103 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 1.67-2.00 (6H, m), 2.45 (1H, m), 3.23 (2H, t), 7.50 (1H, d), 7.58 (1H, dd), 7.82 (1H, d), 8.53 (1H t), 8.61 (1H, s), 10.00 (1H, s)

LC/MS, t=3.77 min, Molecular ion observed (MH⁺)=465 consistent with the molecular formula C₁₇H₁₅N₄OF₃ ³⁵Cl⁸¹Br

Example 228 2-(2-Fluoro-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (80 mg) and 2-fluoro-4-chloroaniline (198 mg, ex Lancaster) afforded the title compound (94 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 1.67-2.08 (6H, m), 2.45 (1H, m), 3.23 (2H, t), 7.31 (1H, d), 7.53 (1H, dd), 7.60 (1H, t), 8.53 (1H t), 8.64 (1H, s), 10.00 (1H, s)

LC/MS, t=3.59 min, Molecular ion observed (MH⁺)=403 consistent with the molecular formula C₁₇H₁₅N₄OF₄ ³⁵Cl

Example 229 2-(2-Fluoro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (80 mg) and 2-fluoro-4-bromoaniline (259 mg, ex Lancaster) afforded the title compound (95 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 1.67-2.00 (6H, m), 2.45 (1H, m), 3.23 (2H, t), 7.43 (1H, d), 7.54 (1H, t), 7.63 (1H, dd), 8.53 (1H t), 8.64 (1H, s), 10.00 (1H, s)

LC/MS, t=3.63 min, Molecular ion observed (MH⁺)=449 consistent with the molecular formula C₁₇H₁₅N₄OF₄ ⁸¹Br

Example 230 2-(2-Bromo-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide (80 mg) and 2-bromo-4-chloroaniline (281 mg, ex Lancaster) afforded the title compound (105 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 1.67-2.08 (6H, m), 2.45 (1H, m), 3.23 (2H, t), 7.52 (2H, m), 7.85 (1H, s), 8.53 (1H t), 8.60 (1H, s), 10.00 (1H, s)

LC/MS, t=3.75 min, Molecular ion observed (MH⁺)=465 consistent with the molecular formula C₁₇H₁₅N₄OF₃ ³⁵Cl⁸¹Br

Example 231 2-(2-Fluoro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (80 mg) and 2-fluoro-4-bromoaniline (236 mg, ex Lancaster) afforded the title compound (96 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 0.90-0.92 (2H, m), 1.15-1.20 (3H, m), 1.44-1.46 (1H, m), 1.63-1.72 (5H, m), 3.05 (2H, t), 7.44 (1H, d), 7.55 (1H, t), 7.64 (1H, dd), 8.55 (1H t), 8.66 (1H, s), 10.00 (1H, s)

LC/MS, t=3.83 min, Molecular ion observed (MH⁺)=477 consistent with the molecular formula C₁₉H₁₉N₄OF₄ ⁸¹Br

Example 232 2-(2-Fluoro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (80 mg) and 2-fluoro-4-bromoaniline (235 mg, ex Lancaster) afforded the title compound (100 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 1.16-1.23 (2H, m), 1.60 (2H, d), 1.71 (1H, m), 3.1 (2H, t), 3.25 (2H, m), 3.85 (2H, d), 7.43 (1H, d), 7.55 (1H, t), 7.64 (1H, dd), 8.60 (1H, t), 8.65 (1H, s), 10.10 (1H, s)

LC/MS, t=3.28 min, Molecular ion observed (MH⁺)=479 consistent with the molecular formula C₁₈H₁₇N₄O₂F₄ ⁸¹Br

Example 233 2-(2-Chloro-4-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (80 mg) and 2-chloro-4-fluoroaniline (180 mg, ex Lancaster) afforded the title compound (95 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 1.14-1.23 (2H, m), 1.59 (2H, d), 1.71 (1H, m), 3.1 (2H, t), 3.25 (2H, m), 3.85 (2H, d), 7.27 (1H, m), 7.55 (2H, m), 8.58 (1H, t), 8.61 (1H, s), 10.00 (1H, s)

LC/MS, t=3.14 min, Molecular ion observed (MH⁺)=433 consistent with the molecular formula C₁₈H₁₇N₄O₂F₄ ³⁵Cl

Example 234 2-(2-Chloro-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (80 mg) and 2-chloro-4-bromoaniline (255 mg, ex Lancaster) afforded the title compound (102 mg) after purification by trituration with 2N hydrochloric acid.

NMR (DMSO-d6) δ 1.14-1.23 (2H, m), 1.58 (2H, d), 1.72 (1H, m), 3.1 (2H, t), 3.28 (2H, m), 3.84 (2H, d), 7.51 (1H, d), 7.59 (1H, dd), 7.82 (1H, d), 8.58 (1H, t), 8.63 (1H, s), 10.00 (1H, s)

LC/MS, t=3.42 min, Molecular ion observed (MH⁺)=495 consistent with the molecular formula C₁₈H₁₇N₄O₂F₃ ³⁵Cl⁸¹Br

Example 235 2-(2-Chloro-4-cyano-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (80 mg) and 2-chloro-4-cyanoaniline (188 mg, ex Lancaster) afforded the title compound (22 mg). Sample purified by mass directed auto-prep.

NMR (DMSO-d6) δ 1.14-1.23 (2H, m), 1.59 (2H, d), 1.72 (1H, m), 3.12 (2H, t), 3.23 (2H, m), 3.85 (2H, d), 7.87 (1H, d), 7.92 (1H, d), 8.14 (1H, s), 8.65 (1H, t), 8.75 (1H, s), 10.20 (1H, s)

LC/MS, t=3.11 min, Molecular ion observed (MH⁺)=440 consistent with the molecular formula C₁₉H₁₇N₅O₂F₃ ³⁵Cl

Example 236 2-(2-Chloro-4-trifluoromethyl-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (80 mg) and 2-chloro-4-trifluoromethylaniline (241 mg, ex Lancaster) afforded the title compound (48 mg). Sample purified by mass directed auto-prep.

NMR (DMSO-d6) δ 1.17-1.23 (2H, m), 1.59 (2H, d), 1.72 (1H, m), 3.12 (2H, t), 3.23 (2H, m), 3.85 (2H, d), 7.77 (1H, d), 7.88 (1H, d), 7.96 (1H, s), 8.63 (1H, t), 8.72 (1H, s), 10.15 (1H, s)

LC/MS, t=3.47 min, Molecular ion observed (MH⁺)=483 consistent with the molecular formula C₁₉H₁₇N₄O₂F₆ ³⁵Cl

Example 237 2-(2-Chloro-4-cyano-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (80 mg) and 2-chloro-4-cyanoaniline (189 mg, ex Lancaster) afforded the title compound (15 mg). Sample purified by mass directed auto-prep.

NMR (DMSO-d6) δ 0.90 (2H, m), 1.15-1.23 (3H, m), 1.44-1.46 (1H, m), 1.67-1.73 (5H, m), 3.06 (2H, t), 7.87 (1H, dd), 7.92 (1H, d), 8.14 (1H, d), 8.58 (1H t), 8.74 (1H, s), 10.10 (1H, s)

LC/MS, t=3.67 min, Molecular ion observed (MH⁺)=438 consistent with the molecular formula C₂₀H₁₉N₅OF₃ ³⁵Cl

Example 238 2-(2-Bromo-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (80 mg) and 2-bromo-4-chloroaniline (257 mg, ex Lancaster) afforded the title compound (23 mg). Sample purified by mass directed auto-prep.

NMR (DMSO-d6) δ 0.89-0.95 (2H, m), 1.15-1.20 (3H, m), 1.44-1.46 (1H, m), 1.62-1.72 (5H, m), 3.04 (2H, t), 7.52 (2H, m), 7.85 (1H, d), 8.53 (1H t), 8.61 (1H, s), 10.00 (1H, s)

LC/MS, t=3.94 min, Molecular ion observed (MH⁺)=493 consistent with the molecular formula C₁₉H₁₉N₄OF₃ ³⁵Cl⁸¹Br

Example 239 2-(2-Bromo-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Example 166, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (80 mg) and 2-bromo-4-chloroaniline (255 mg, ex Lancaster) afforded the title compound (6 mg). Sample purified by mass directed auto-prep.

NMR (DMSO-d6) δ 1.14-1.23 (2H, m), 1.58 (2H, d), 1.72 (1H, m), 3.1 (2H, t), 3.28 (2H, m), 3.84 (2H, d), 7.50 (2H, m), 7.82 (1H, d), 8.58 (1H, t), 8.63 (1H, s), 10.00 (1H, s)

LC/MS, t=3.40 min, Molecular ion observed (MH⁺)=495 consistent with the molecular formula C₁₈H₁₇N₄O₂F₃ ³⁵Cl⁸¹Br

Example 240 2-(3-Bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopropylmethyl-amide

In a manner similar to Reference Example 1 (c) 2-(3-bromophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (80 mg) and cyclopropylmethylamine (19 mg, ex Lancaster) afforded the title compound (24 mg). Sample purified by mass directed auto-prep.

NMR (DMSO-d6) δ 0.22 (2H, m), 0.45 (2H, m), 1.67 (1H, m), 3.13 (2H, t), 7.23 (1H, d), 7.30 (1H, t), 7.72 (1H, d), 8.10 (1H, m), 8.68 (1H, t), 8.80 (1H s), 10.60 (1H, s)

LC/MS, t=3.49 min, Molecular ion observed (MH⁺)=417 consistent with the molecular formula C₁₆H₁₄N₄OF₃ ⁸¹ Br

Example 241 2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopropylmethyl-amide

In a manner similar to Reference Example 1 (c) 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (80 mg) and cyclopropylmethylamine (19 mg, ex Lancaster) afforded the title compound (58 mg).

NMR (DMSO-d6) δ 0.22 (2H, m), 0.45 (2H, m), 1.67 (1H, m), 3.13 (2H, t), 7.23 (1H, d), 7.30 (1H, t), 7.72 (1H, d), 8.10 (1H, m), 8.68 (1H, t), 8.80 (1H s), 10.60 (1H, s)

LC/MS, t=3.56 min, Molecular ion observed (MH⁺)=405 consistent with the molecular formula C₁₆H₁₃N₄OF₃ ³⁵Cl

Example 242 2-(2,3-Difluorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

To a solution of 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (Example 166a) (50 mg) in 1,4-dioxan (1 ml) was added 2,3-difluoroaniline (Aldrich) (113 mg) and the mixture was stirred at reflux for 47 hours using a Radleys Greenhouse Parallel Synthesiser. The dioxan was removed using a nitrogen blow down unit. The residue was taken up into methanol (0.5 ml) and dimethylsulfoxide (0.5 ml) and purified using a mass directed auto-preparative system to give the title compound (16 mg)

NMR (Chloroform-d6) δ 0.94-1.08 (2H, m), 1.15-1.34 (3H, m), 1.5-1.6 (>1H, m & water) 1.65-1.73 (1H, m), 1.73-1.83 (4H, m), 3.30 (2H, t), 5.91 (1H, bs) 6.88-6.98 (1H, m) 7.08-7.1 (1H, m), 7.66 (1H, bs), 8.16-8.25 (1H, m), 8.75 (1H, s).

LC/MS t=3.66 min, [MH⁺] 415 consistent with the molecular formula C₁₉H₁₉F₅N₄O

Example 243 2-(2-Fluoro-3-trifluoromethyl-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 242, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (Example 166a) (50 mg) in 1,4-dioxan (1 ml) and 2-fluoro-3-trifluoromethylphenylamine (Aldrich) (156 mg) were reacted to give the title compound (11 mg)

NMR (Chloroform-d6) δ 0.94-1.08 (2H, m), 1.15-1.34 (3H, m), 1.55-1.59 (1H, m), 1.65-1.73 (1H, m), 1.73-1.83 (4H, m), 3.30 (2H, t), 5.91 (1H, bs), 7.28-7.37 (2H, m), 7.74 (1H, bs), 8.65-8.73 (1H, m), 8.77-8.80 (1H, m)

LC/MS t=3.66 min [MH⁺]=465 consistent with the molecular formula C₂₀H₁₉F₇N₄O

Example 244 2-(2-Chloro-4-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

To a solution of 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (Example 166a) (50 mg) in 1,4-dioxan (1 ml) was added 2-chloro-4-methylphenylamine (Aldrich) (109 mg) the mixture was stirred at reflux for 24 hours using a Radleys Greenhouse Parallel Synthesiser. The dioxan was removed using a nitrogen blow down unit. The residue was taken up into methanol (0.5 ml) and dimethylsulfoxide (0.5 ml) and purified using mass directed auto-preparative system to give the title compound) (24 mg)

NMR (Methanol-d6) δ 1.50-1.60 (2H, m), 1.70-1.89 (3H, m), 2.06-215 (1H, m), 2.2-2.26 (1H, m), 2.27-2.38 (4H, m), 2.88 (3H, s), 3.71 (2H, d), 7.68 (1H, d), 7.85 (1H, s), 8.31 (1H, d), 9.10 (1H, s).

LC/MS t=3.81 min, [MH⁺]=427 consistent with the molecular formula C₂₀H₂₂ ³⁵ClF₃N₄O

Example 245 2-(4-Chloro-3-methoxyphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 243, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (Example 166a) (50 mg) in 1,4-dioxan (1 ml) and 4-chloro-3-methoxy-phenylamine (Wychem) (122 mg) were reacted to give the title compound (33 mg)

NMR (Methanol-d6) δ 0.95-1.06 (2H, m), 1.20-1.34 (3H, m), 1.55-1.64 (1H, m), 1.65-171 (1H, m), 1.72-1.85 (4H, m), 3.19 (2H, d), 3.90 (3H, s), 7.18 (1H, dd), 7.27 (1H, d), 7.80 (1H, bs), 8.64 (1H, s).

LC/MS t=3.79 min, [MH⁺] 443 consistent with the molecular formula C₂₀H₂₂ ³⁵ClF₃N₄O₂

Example 246 2-(5-Chloro-2-methylphenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide

In a manner similar to Example 243, 2-chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclohexylmethyl-amide (Example 166a) (50 mg) in 1,4-dioxan (1 ml) and 5-chloro-2-methyl aniline (Aldrich) (110 mg) were reacted to give the title compound (36 mg)

NMR (Methanol-d6) δ1.47-1.59 (2H, m), 1.72-1.89 (3H, m), 2.05-2.18 (1H, m) 2.19-2.25 (1H, m), 2.31 (4H, t), 2.79 (3H, s), 3.71 (2H, d), 7.76 (1H, dd), 7.76 (1H, d), 8.17 (1H, d), 9.09 (1H, s)

LC/MS t=3.77 min [MH⁺]=427 consistent with the molecular formula C₂₀H₂₂ ³⁵ClF₃N₄O

Example 247 2-(3-Chloro-4-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-amide

2-Chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-amide (116 mg Example 183a), 3-chloro-4-fluoroaniline (ex-Aldrich, 275 mg), and 1,4-dioxan (1.2 ml) were stirred at 100° C. under nitrogen for 6 h. The cooled reaction mixture was evaporated in vacuo, treated with ethyl acetate (5 ml), washed with aqueous 2M hydrochloric acid (2×3 ml), followed by brine, and dried (Na₂SO₄). The solution was evaporated in vacuo to give the title compound (104 mg).

NMR δ (DMSO-d6) 1.15-1.32 (2H, m), 1.46-1.66 (4H, m) 1.66-1.78 (2H, m), 2.1 (1H, q), 3.17 (2H, t), 7.4 (1H, t), 7.63-7.7 (1H, m), 8.05 (1H, dd), 8.61 (1H, t), 8.79 (1H, s), 10.6 (1H, s).

LC/MS t=3.7 min, Molecular ion observed [MH⁺]=417 consistent with the molecular formula C₁₈H₁₇ClF₄N₄O.

Example 248 2-(3-Chloro-2-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Example 247, 3-chloro-2-fluoroaniline (ex-Acros, 275 mg) was reacted for 18 h, worked up analogously, then stirred in isohexane (6 ml), and filtered off to give the title compound (82 mg).

NMR δ (CDCl₃) 1.2-1.34 (2H, m), 1.55-1.76 (>4H, m+H2O), 1.78-1.89 (2H, m), 2.16 (1H, q), 3.41 (1H, t), 5.83-5.95 (1H, brt), 7.1-7.18 (2H, m), 7.28 (1H, s), 7.66 (1H, br s), 8.3-8.4 (1H, m), 8.75 (1H, s).

LC/MS t=3.7 min, Molecular ion observed [MH⁺] 417 consistent with the molecular formula C₁₈H₁₇ClF₄N₄O.

Example 249 2-(2-Chloro-5-fluoro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-amide

2-Chloro-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-amide (100 mg Example 183a), 2-chloro-5-fluoroaniline (ex-Fluorochem, 237 mg), and 1,4-dioxan (1 ml) were stirred at 100° C. under nitrogen for 18 h. The cooled reaction mixture was evaporated in vacuo, treated with ethyl acetate (5 ml), washed with aqueous 2M hydrochloric acid (2×3 ml), followed by water (2×3 ml), and dried (Na₂SO₄). The solution was evaporated in vacuo and the residue purified by mass directed autopreparative purification to give the title compound (35 mg).

NMR δ (CDCl₃) 1.2-1.35 (2H, m), 1.53-1.76 (>4H, m+H2O), 1.78-1.90 (2H, m), 2.17 (1H, q), 3.41 (2H, dd), 5.9 (1H, brt), 7.0-7.11 (2H, m), 7.65-7.7 (1H, m) 8.56 (1H, dd), 8.79 (1H, s).

LC/MS t=3.67 min, Molecular ion observed [MH⁺] 417 consistent with the molecular formula C₁₈H₁₇ClF₄N₄O.

Example 250 2-(3,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

In a manner similar to Reference Example 1(c) 2-(3,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and 4-aminomethyltetrahydropyran (20 mg, ex CombiBlocks) afforded the title compound (38 mg).

NMR (DMSO-d6) δ 1.18-1.25 (2H, m), 1.62 (2H, d), 1.74 (1H, m), 3.1 (2H, t), 3.25 (2H, m), 3.85 (2H, d), 7.60 (1H, t), 7.69 (1H, m), 8.16 (1H, dd), 8.64 (1H, t), 8.84 (1H, s), 10.70 (1H, s)

LC/MS, t=3.45 min, Molecular ion observed (MH⁺)=449 consistent with the molecular formula C₁₈H₁₇N₄O₂ ³⁵Cl₂F₃

Example 251 2-(Phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclopentylmethyl-amide

In a manner similar to Reference Example 1 (c), 2-(Phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (30 mg) and cyclopentylmethylamine hydrochloride (21 mg) afforded the title compound (32 mg) after purification by trituration with diethylether.

NMR (DMSO-d6) δ 1.20-1.25 (2H, m), 1.48-1.72 (6H, m), 2.07 (1H, m), 3.13 (2H, t), 7.04 (1H, t), 7.34 (2H, t), 7.74 (2H, d), 8.58 (1H, t), 8.70 (1H s), 10.35 (1H, s)

LC/MS, t=3.52 min, Molecular ion observed (MH⁺)=365 consistent with the molecular formula C₁₈H₁₉N₄OF₃

Example 252 2-(2-Fluoro-3-trifluoromethyl-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

2-Chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid cyclobutylmethyl-amide (200 mg) in 2-fluoro-3-(trifluoromethyl)aniline (0.5 ml) was heated at 180° C. under microwave irradiation for 30 minutes. The residue was dissolved in dichloromethane and purified over silica gel (Merck 9385) using the Biotage Horizon system eluting with 10% ethylacetate/isohexane to 100% ethyl acetate gradient to afford the title compound.

NMR (CDCl₃) δ1.70-1.81 (2H, m), 1.86-2.00 (2H, m), 2.07-2.17 (2H, m), 2.51-2.65 (1H, m), 3.48 (2H, dd), 5.78-5.86 (1H, m), 7.25-7.36 (2H, m), 7.70-7.76 (1H, bs), 8.64-8.72 (1H, m), 8.75-8.79 (1H, s)

LC/MS, t=3.64 min, Molecular ion observed (MH⁺)=437 consistent with the molecular formula C₁₈H₁₅F₇N₄O

Example 253 2-(2-Methyl-4-chloro-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid cyclobutylmethyl-amide

To a solution of 2-chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid cyclobutylmethyl-amide (50 mg) in 1,4-dioxan (1.0 ml) was added 2-methyl-4-chloroaniline (120 mg) and the solution heated at 180° C. under microwave irradiation for 30×2 minutes. The residue was dissolved in 1:1 DMSO:methanol (1.0 ml) and purified by Mass Directed Auto-Purification to afford the title compound (36 mg).

NMR (CDCl₃) δ 1.79-1.80 (2H, m), 1.85-1.99 (2H, m), 2.05-2.16 (2H, m), 2.25-2.63 91H, m), 5.74-5.83 (1H, m), 7.15 (1H, bs), 7.2-7.78 (2H, m), 7.81 (1H, d), 8.66 (1H, s)

LC/MS, t=3.6 min, Molecular ion observed (MH⁺)=398 consistent with the molecular formula C₁₈H₁₈ClF₃N₄O

Example 254 2-(2-Trifluoromethyl-4-bromo-phenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide

2-Chloro-4-trifluoromethyl-pyrimidin-5-carboxylic acid (tetrahydro-pyran-4-ylmethyl)-amide (80 mg) in 2-trifluoromethyl-4-bromoaniline (0.5 ml) was heated at 190° C. under microwave irradiation for 20 minutes. The sample was purified by mass directed auto-purification to afford the title compound (21 mg).

NMR (DMSO-d6) δ 1.15-1.23 (2H, m), 1.57 (2H, d), 1.60 (1H, m), 3.09 (2H, t), 3.26 (2H, t), 3.84 (2H, d), 7.51 (1H, d), 7.95 (2H, m), 8.58 (2H, s, t), 10.00 (1H, s)

LC/MS, t=3.41 min, Molecular ion observed (MH⁺)=529 consistent with the molecular formula C₁₉H₁₇N₄O₂F₆ ⁸¹Br

Example 255 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydrothiopyran-4-ylmethyl) amide a) 4-(Aminomethyl)tetrahydrothiopyran

A solution of borane-tetrahydrofuran complex (1M in tetrahydrofuran, 11 ml) was added over 5 minutes to a solution of tetrahydro-2H-thiopyran-4-carbonitrile (1.27 g) [Heimgartner et al, Helv. Chim. Acta 80(5), 1528 (1997)] in dry tetrahydrofuran (5 ml) under nitrogen at room temperature. The solution was heated at reflux overnight, then cooled to 20° C. Methanol (15 ml) was added dropwise keeping the temperature below 25° C., then the mixture was cooled to 0° C. and dry hydrogen chloride was bubbled through for 15 mins. The resulting mixture was heated at reflux for 1.5 hours, evaporated and the residue re-evaporated twice from methanol. Ether (30 ml) was added giving a white oily solid. The ether was decanted and the residue was dissolved in water (30 ml) and extracted with dichloromethane (2×30 ml). The remaining aqueous was made strongly basic with sodium hydroxide and extracted with dichloromethane (2×30 ml). The combined extracts were dried over potassium carbonate and evaporated to give the title compound (390 mg)

NMR (DMSO) δ 1.2 (5H, m), 2.0 (2H, m), 2.36 (2H, m), 2.55 (4H, m).

b) 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydrothiopyran-4-ylmethyl) amide

In a manner similar to Reference Example 1b) 2-(3-chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (95 mg) and 4-(aminomethyl)tetrahydrothiopyran (79 mg) (above) gave the title compound (92 mg).

NMR (DMSO-d6) δ 1.26 (2H, m), 1.55 (1H, m), 2.01 (2H, m), 2.60 (4H, m), 3.10 (2H, t), 7.09 (1H, m), 7.37 (1H, t), 7.65 (1H, m), 7.96 (1H, m), 8.63 (1H, t), 8.81 (1H, s), 10.6 (1H, s).

LC/MS CF₁ 11437, t=3.61 min, Molecular ion observed (MH⁺)=431 consistent with the molecular formula C₁₈H₁₈ ³⁵ClF₃N₄OS

Example 256 2-(2,4-Dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (tetrahydrothiopyran-4-ylmethyl) amide

In a manner similar to Reference Example 1b) 2-(2,4-dichlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (106 mg) and 4-(aminomethyl)tetrahydrothiopyran (79 mg) (Example 255a) gave the title compound (82 mg).

NMR (DMSO-d6) δ 1.27 (2H, m), 1.55 (1H, m), 2.00 (2H, m), 2.59 (4H, m), 3.08 (2H, t), 7.47 (1H, m), 7.57 (1H, d), 7.72 (1H, m), 8.59 (1H, t), 8.64 (1H, s), 10.0 (1H, s).

LC/MS CF₁ 11493, t=3.70 min, Molecular ion observed (MH⁺)=465 consistent with the molecular formula C₁₈H₁₇ ³⁵Cl₂F₃N₄OS

Example 263 2-(3-Chlorophenylamino)-4-trifluoromethyl-pyrimidine-5-carboxylic acid (2-oxo-propyl)-amide

To a stirred solution of 2-(3-chloro-phenylamino)-trifluoromethyl-pyrimidine-5-carboxylic acid (2-hydroxy-propyl)-amide (200 mg) in dimethylsulfoxide (6.0 ml) and triethylamine (324 mg) at 0° C. was added a solution of sulphur trioxide-pyridine complex (250 mg) in dimethylsulfoxide (6.0 ml). This was allowed to warm to room temperature and after 2 hours the mixture was diluted with dichloromethane and washed twice with 0.1N hydrochloric acid. The organic layer was dried (Na₂SO₄) and evaporated. The sample was purified by mass directed auto-purification to afford the title compound (91 mg).

NMR (DMSO-d6) δ 2.15 (3H, s), 4.13 (2H, d), 7.10 (1H, d), 7.36 (1H, t), 7.67 (1H, d), 7.96 (1H, s), 8.84 (1H, s), 8.94 (1H, t), 10.55 (1H, s)

LC/MS, t=3.18 min, Molecular ion observed (MH⁺)=373 consistent with the molecular formula C₁₅H₁₂N₄O₂F₃ ³⁵Cl

Example 264 2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (dioxo-hexahydro-1/⁶-thiopyran-4-ylmethyl)-amide

2-(3-Chlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydro-thiopyran-4-ylmethyl)-amide (Example 255) (82 mg) was dissolved in dichloromethane (15 ml) and cooled in an ice bath. A solution of 3-chloroperbenzoic acid (95 mg; Lancaster 50-56%) in dichloromethane (5 ml) was added dropwise over 5 mins. The resulting solution was stirred at room temp for 2 hrs then a saturated solution of sodium sulphite (10 ml) was added and the mixture was stirred for 15 mins. Dichloromethane (20 ml), saturated sodium bicarbonate solution (20 ml) and water (30 ml) were added, separated and the organics were washed with water (2×30 ml), dried over magnesium sulphate and evaporated to an oil. Purification by chromatography on silica gel (dichloromethane/methanol 10:1) gave the title compound (17 mg).

LC/MS t=3.09 min, Molecular ion observed (MH⁺)=463 consistent with the molecular formula C₁₈H₁₈ ³⁵ClF₃N₄O₃S

Example 265 2-(2,4-Dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (dioxo-hexahydro-1/⁶-thiopyran-4-ylmethyl)-amide

In a similar manner to Example 264, 2-(2,4-dichlorophenylamino)-4-trifluoromethylpyrimidine-5-carboxylic acid (tetrahydro-thiopyran-4-ylmethyl)-amide (Example 256) (72 mg) and 3-chloroperbenzoic acid (146 mg) gave the title compound (63 mg)

LC/MS t=3.21 min, Molecular ion observed (MH⁺)=497 consistent with the molecular formula C₁₈H₁₇ ³⁵Cl₂F₃N₄O₃S

Example 266 Preparation of Nanomilled Compound

2.5 g of compound of example 176 was weighed into a 10 ml centrifuge tube. 25 ml of 0.3 mm yttrium zirconium (YTZ) ceramic milling beads (Manufacturer: Tosoh, Japan; Supplier: Glen Creston Ltd., batch no. 5280130030)”) was weighed into a 50 ml milling pot. 22.5 ml of aqueous 1.5% HPMC was measured with a measuring cylinder into a 100 ml beaker. This solution was homogenised for 3 seconds with an Ultra Turrax T25 homogeniser. Approximately 200 mg of the 2.5 g of the compound was added to the HPMC solution and homogenised at the lowest speed setting until the powder was wetted. This was repeated until all the compound had been added. The speed of the homogeniser was then increased to maximum and the suspension was homogenised for a further 3 minutes. This suspension was allowed to stand for 30 minutes in order to allow some of the foam to disperse. The suspension was then poured into the 50 ml pot containing the YTZ milling beads, stirring to release any trapped air. The lid to the pot was then fitted and the pot sealed with some Nesco film. This procedure was repeated for a second 50 ml nanomilling pot and both pots were placed on a Retsch mill and milled for a total of 8 hours.

The milling pots were removed from the Retsch mill and left to cool and for the foam to disperse overnight. In the morning the suspension and bead mixture was passed through a 200μ, 40 mm diameter screen. The contents from each 50 ml pot was washed with aqueous 1.5% HPMC: 10% of the original suspension volume (i.e. 2.5 ml). The suspension from the 2 pots was combined to make 1 batch. The suspension obtained from the method above was named the concentrate.

A sample of the concentrate was diluted 1 in 4 with aqueous 1.5% HPMC to give a nominal concentration of 25 mg/ml. This first dilution was assayed by HPLC. The concentration of the concentrate was calculated to be 91.21 mg/ml.

HPLC Conditions

Column: Symmetry C₁₈ 5μ 3.9×150 mm column; flow rate 1.0 ml/min; column temp 40° C.; UV detection at 280 nm.

Mobile phase gradient: A: water + 0.1% trifluoro acetic acid (TFA) B: acetonitrile + 0.1% TFA

TABLE A HPLC gradient Time (min.) A (%) B (%) 0 90 10 15 10 90 20 10 90 20.1 90 10 30 90 10

A particle size analysis was carried out on the Lecotrac laser particle size analyser. The results are shown in Table B along with the results from the starting material for comparison:

TABLE B Particle Size Analysis Pre-nanomilling Post-nanomilling 50% 95% 50% 95% Compound percentile (μ) percentile (μ) percentile (μ) percentile (μ) Example 176 13.15 68.7 0.33 1.78

A dilution of nominally 15.0 mg/ml was prepared using 21.36 ml of the concentrate and (100−20.34) ml=83.64 ml of diluent (aqueous 1.5% HPMC).

Compounds of Examples 19, 34, 194, 217, 228, 247 were nanomilled on a 1 g scale using the process described above and the particle size analysed pre and post nanomilling. The results are given in Table C.

TABLE C Pre-nanomilling Post-nanomilling 50% 50% 95% percentile 95% percentile percentile Compound (μ) percentile (μ) (μ) (μ) Ex 247 13.2 68.7 0.64 2.53 Ex 217 5.70 34.9 0.34 1.30 Ex 19 5.22 25.5 0.40 1.40 4.65 47.1 0.44 1.69 6.78 33.7 0.56 1.97 10.46 32.7 0.18 0.56

Formulations for pharmaceutical use incorporating compounds of the present invention either pre or post nanomilling can be prepared in various forms and with numerous excipients. Examples of such formulations are given below.

Example 267 Inhalant Formulation

A compound of formula (I) or a pharmaceutically acceptable derivative thereof, (1 mg to 100 mg) is aerosolized from a metered dose inhaler to deliver the desired amount of drug per use.

Example 268 Tablet Formulation

Tablets/Ingredients Per Tablet 1. Active ingredient 40 mg (Compound of formula (I) or pharmaceutically acceptable derivative) 2. Corn Starch 20 mg 3. Alginic acid 20 mg 4. Sodium Alginate 20 mg 5. Mg stearate 1.3 mg 

Procedure for Tablet Formulation:

Ingredients 1, 2, 3 and 4 are blended in a suitable mixer/blender. Sufficient water is added portion-wise to the blend with careful mixing after each addition until the mass is of a consistency to permit its conversion to wet granules. The wet mass is converted to granules by passing it through an oscillating granulator using a No. 8 mesh (2.38 mm) screen. The wet granules are then dried in an oven at 140° F. (60° C.) until dry. The dry granules are lubricated with ingredient No. 5, and the lubricated granules are compressed on a suitable tablet press.

Example 269 Parenteral Formulation

A pharmaceutical composition for parenteral administration is prepared by dissolving an appropriate amount of a compound of formula (I) in polyethylene glycol with heating. This solution is then diluted with water for injections Ph Eur. (to 100 ml). The solution is then rendered sterile by filtration through a 0.22 micron membrane filter and sealed in sterile containers. 

1. A compound of formula (I):

wherein: Y is phenyl, optionally substituted with one, two or three substituents; R¹ is selected from hydrogen, C₁₋₆ alkyl C₃₋₆ cycloalkyl and halosubstitutedC₁₋₆ alkyl; R² is (CH₂)_(m)R³ where m is 0 or 1; or R¹ and R² together with N to which they are attached form an optionally substituted 4- to 8-membered non-aromatic heterocyclyl ring; R³ is an optionally substituted 4- to 8-membered non-aromatic heterocyclyl group, an optionally substituted C₃₋₈ cycloalkyl group, an optionally substituted straight or branched C₁₋₁₀ alkyl a C₅₋₇ cycloalkenyl or R⁵; R⁴ is selected from hydrogen, C₁₋₆ alkyl C₃₋₆ cycloalkyl, or halosubstitutedC₁₋₆ alkyl COCH₃, and SO₂Me; R⁵ is

wherein p is 0, 1 or 2 and X is CH₂ or O; R⁶ is methyl, chloro or CHxFn wherein n is 1, 2, or 3, x is 0, 1 or 2 and n and x add up to 3; R⁷ is OH, C₁₋₆alkoxy, NR^(8a)R^(8b), NHCOR⁹, NHSO₂R⁹, SOqR⁹; R^(8a) is H or C₁₋₆alkyl; R^(8b) is H or C₁₋₆alkyl; R⁹ is C₁₋₆alkyl; q is 0, 1 or 2; or a pharmaceutically acceptable salt thereof.
 2. A compound as claimed in claim 1 wherein Y is a substituted phenyl.
 3. A compound of formula (Ia):

wherein: R¹ is selected from hydrogen, C₁₋₆ alkyl, C₃₋₆ cycloalkyl and halosubstitutedC₁₋₆ alkyl; R² is (CH₂)_(m)R³ where m is 0 or 1; or R¹ and R² together with N to which they are attached form a 4- to 8-membered non-aromatic ring selected from azetidinyl, pyrrolidinyl, morpholinyl, piperizinyl, piperidinyl, tetrahydropyridinyl, azapine, oxapine, azacyclooctanyl, azaoxacyclooctanyl and azathiacyclooctanyl any of which can be unsubstituted or substituted by one, two or three substituents selected from C₁₋₆ alkyl, C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo, sulfonyl group, methylsulfonyl, NR^(8a)R^(8b) NHCOCH₃, (═O), and —CONHCH₃. R³ is 2- or 3-azetidinyl, oxetanyl, thioxetanyl, thioxetanyl-s-oxide, thioxetanyl-s,s-dioxide, dioxalanyl, pyrrolidinyl, tetrahydrofuranyl, tetrahydrothiophenyl, morpholinyl, piperidinyl, piperazinyl, tetrahydropyranyl, tetrahydrothiopyranyl, thiomorpholinyl, thiomorpholinyl-s,s-dioxide, tetrahydropyridinyl, azapine, oxapine, azacyclooctanyl, azaoxacyclooctanyl, azathiacyclooctanyl, oxacylcooctanyl, thiacyclooctanyl, a C₃₋₈ cycloalkyl group, a straight or branched C₁₋₁₀ alkyl, a C₅₋₇ cycloalkenyl or R⁵, any of which can be unsubstituted or substituted by one, two or three substituents selected from C₁₋₆ alkyl, C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo, sulfonyl group, methylsulfonyl, NR^(8a)R^(8b), NHCOCH₃, (═O), and —CONHCH₃; R¹⁰ is selected from C₁₋₆ alkyl, halosubstitutedC₁₋₆ alkyl, C₁₋₆ alkoxy, a hydroxy group, a cyano group, halo, a C₁₋₆alkyl sulfonyl group, —CONH₂, —NHCOCH₃, —COOH, halosubstitutedC₁₋₆ alkoxy, SC₁₋₆alkyl and SO₂NR^(8a)R^(8b); R⁴ is selected from hydrogen, C₁₋₆ alkyl, C₃₋₆ cycloalkyl, or halosubstitutedC₁₋₆ alkyl, COCH₃, and SO₂Me; R⁵ is

wherein p is 0, 1 or 2 and X is CH₂ or O; R⁶ is methyl, chloro or CHxFn wherein n is 1, 2, or 3, x is 0, 1 or 2 and n and x add up to 3; R⁷ is OH, C₁₋₆alkoxy, NR^(8a)R^(8b), NHCOR⁹, NHSO₂R⁹, SOqR⁹; R^(8a) is H or C₁₋₆alkyl; R^(8b) is H or C₁₋₆alkyl; R⁹ is C₁₋₆alkyl; q is 0, 1 or 2; d is 0, 1, 2 or 3 or a pharmaceutically acceptable salt thereof.
 4. A compound as claimed in claim 1 wherein R⁴ is C₁₋₆alkyl or hydrogen.
 5. A compound as claimed in claim 1 wherein R⁶ is CF₃.
 6. A compound as claimed in claim 1 selected from any one of Examples 1 to 265 or a pharmaceutically acceptable derivative thereof.
 7. A compound as claimed in claim 1 in nanoparticulate form.
 8. A pharmaceutical composition comprising a compound as claimed in claim
 1. 9. A pharmaceutical composition as claimed in claim 8 further comprising a pharmaceutical carrier or diluent thereof.
 10. A method of treating a human suffering from a condition which is mediated by the activity of cannabinoid 2 receptors which comprises administering to said subject a therapeutically effective amount of a compound as claimed in claim
 1. 11. A method of treatment as claimed in claim 10 wherein the condition is an immune disorder, an inflammatory disorder, pain, rheumatoid arthritis, multiple sclerosis, osteoarthritis or osteoporosis.
 12. The method as claimed in claim 10, wherein said animal is a human. 